Connective tissue supports other tissues and binds them together (bone, blood, and lymph tissues). Figure 4.2. There are four basic tissue types defined by their morphology and function: epithelial tissue, connective tissue, muscle tissue, and nervous tissue. This type of tissue is present in the urinary bladder. The cells in the lower layers continually divide pushing those in upper layers towards the surface. The cells in these tissues are widely dispersed from each other in a matrix (substance) which has fibers. Plant tissues come in several forms: vascular, epidermal, ground, and meristematic. There are four different types of tissue. Some bones – like our rib cage – protect delicate organs and. But when there is load, they stretch and become flat to accommodate the substance (urine). Reference: Principles of Anatomy and Physiology. Muscle cells are excitable, meaning they generate a current when stimulated. diverse collection of tissues that support and connect other tissues, but also have protective functions. The tissue operates by the use of bio-molecular chemical substances called neurotransmitters. This tissue based on need is of different types as simple epithelium, squamous epithelium, columnar epithelium, etc. These cells include fibroblasts, fat cells, mast cells, and also white blood cells like the macrophages, plasma cells, etc. It is made up of cells called chondrocytes which are embedded in a matrix of collagen and elastic fibers. This epithelium is thin and offers the least resistance for the transfer of molecules from one side to another. BiomedGuide.com is a science resource for students and teachers. It helps to protect the nerve cell from damage. It provides elasticity and tensile strength to almost all the parts of the body. Neuroglia play an essential role in supporting neurons and modulating their information propagation. The four types of tissue in the body are epithelial, connective, muscle, and nervous. Body structure and homeostasis. Choose from 500 different sets of 4 types of epithelial tissue tissues flashcards on Quizlet. The Four Types of Tissues. Note that there are also subclassifications of these, and also. Nervous tissue: This tissue is mostly present in the entire nervous system including the brain and spinal cord. This online quiz is called four types of tissue. Functions: support and connect other tissues; protection. There are three general classifications whose names a derived by their appearance: sqaumous, cubodial, and columnar. A “tissue” in simple terms is a bunch of similar cells. 4 Types of tissues. Unlike other cells, these cells do not multiply. They help in movement, contraction, and other physiological activities. It is present as linings of organs like the. These are of many types like adipose tissues, reticular tissue, etc. The cells of the lower layers are thick while those of upper layers near the surface are flat. Email. The cells of an epithelium act as gatekeepers of the body controlling permeability and allowing selective transfer of materials across a physical barrier. These tissues together form the organs in the body. The blood cells include. There are two types of connective tissue: Loose connective tissue holds structures together. Hence, it is absent on the surfaces exposed to stress. This cartilage is of three types as. This is further differentiated as. Organs are organized into organ systems to perform functions. Muscle tissues are bundles of muscle fibers that are arranged in perpendicular lines. The human body contains more than 200 types of cells that can all be classified into four types of tissues: epithelial, connective, muscle, and nervous. they are under the control of our will. They help in the contraction and relaxation of man organs like lungs, stomach, uterus, etc. This has given me clear understanding of tissue. Such changes can be detected through histology, the microscopic study of tissue appearance, organization, and function. PLAY. Epithelial tissue is made of layers of cells that cover the surfaces of the body that come into contact with the exterior … Some Rights Reserved. This is the abundant tissues of all the other tissues. There is one more type of epithelium i.e. Based on the shape of lower layer cells, the epithelium is again differentiated as stratified squamous epithelium, stratified cuboidal epithelium, columnar stratified epithelium, and pseudostratified columnar epithelium. They like skeletal muscles that have striations in them. Unlike the loose connective tissue, this has more fibers and less number of cells. The Four Types of Tissues. Spell. Four Types of Tissue Although there are many types of cells in the human body, they are organized into four broad categories of tissues: epithelial, connective, muscle, and nervous. Identify the four basic types of tissues and the functions of each tissue type. Tissue Cell Types Function Locations Vascular tissue … Commentdocument.getElementById("comment").setAttribute( "id", "a98d53d7907815a7de229dc2cd38b019" );document.getElementById("i279150366").setAttribute( "id", "comment" ); Save my name, email, and website in this browser for the next time I comment. Specialized cells in connective tissue defend the body from microorganisms that enter the body. Collections of tissues joined in units to serve a common function compose organs. This game is part of a tournament. The shape of the cells varies in different layers. Epithelial tissues act as coverings controlling the movement of materials across the surface. Cells are cuboidal or columnar in a relaxed state. The nerve cells are the longest cells in the body. Epithelial tissue creates protective boundaries and is involved in the diffusion of ions and molecules. There is another type called the transitional epithelium. They are involved in functions like the secretions, absorption and expulsion. Other epithelial cells can secrete enzymes. White adipose tissue makes up to 25% of body weight in healthy adults. Learn about the main tissue types and organ systems of the body and how they work together. This tissue is of 3 types as. The primary function of muscle tissue is movement, but muscle has an important role in generating heat for the body. Brown adipose tissue is found in newborns and in very small amounts in adults. Clockwise from nervous tissue, LM × 872, LM … Connective tissue is diverse collection of tissues that support and connect other tissues, but also have protective functions. Blood is called a liquid connective tissue. Homeostasis. Copyright © 2020 BiomedGuide. There are three general classifications whose names a derived by their appearance: sqaumous, cubodial, and columnar. 4 Types Of Tissue Displaying top 8 worksheets found for - 4 Types Of Tissue . This tissue controls the whole body by conduction of impulses across the body. 3. Clark MA, Douglas M, Choi J. This was helpful for my study giude i have a big test with 60 questions so thanks again. This tissue consists of adipocytes (also called fat cells) with fat globules in the matrix of areolar tissue. Thank u.this is helpful in my study and my life. The tissue consists of cells like the fibroblasts, fat cells, macrophages, leukocyte, plasma cells and mast cells. However, the types of tissues have different types of cells and differ in the percentage composition of cells and the extracellular materials. The four types of tissues in the body are epithelial, connective, muscle, and nervous. The four types of tissues are similar in that each consists of cells and extracellular materials. In most other types of stratified epithelium, the upper layer is non-keratinized. This is formed by osteocytes (bone cells) along with wth collagen fibers inorganic salts like phosphate and calcium. These tissues can be very hard, loose like a liquid, and even semisolid. All substances that enter the body must cross an epithelium. It is composed of blood cells (45%) and plasma (55%). Squamous cells appear to be like ‘scales’; cubodial cells appear to be cube-shaped; and columnar cells like columns. … Most voluntary movement is the work of skeletal muscle. This tissue is attached to the body skeletal system, especially long bones. (Areolar tissue, adipose tissue). Each tissue type also has sub-classifications. Collectively, organ systems work together to for a organism for function properly. Epithelial tissues provide the body’s first line of protection from physical, chemical, and biological wear and tear. Based on the shape of cells in this layer, it is further differentiated as, This is a single layer of flattened cells that are closely fitted to each other like tiles on the floor. Collectively, organ systems work together to for a organism for function properly. For example, the epithelial cells of the small intestine releases digestive enzymes. So simple language… Easily understable.. A disruption of the structure is a sign of injury or disease. One example being the cells of the respiratory tract that secrete mucous to trap incoming microorganisms and particles. The connective tissue has different types of cells supporting specialized tissue. Created by. They are controlled by the brain. Examples: epidermis (outer layer of skin); More details and images about Epithelial Tissues →. There are four main types of tissue--the material that makes up living things. Note that there are also subclassifications of these, and also a couple other general classifications. Write. The Four Types of Tissues. Every type of tissue mentioned has the same set functions in almost all of the higher animals. They also have bands or striation along the length. Supply of oxygen and nutrient to all the body. All work authored by BiomedGuide is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License (CC BY-SA 4.0). Thanks.. The human body is basically made of four different types of tissues. Due to the size of the cells, we can predict that they play a certain role in physiology. For example, loose connective tissue holds the outer layer of skin to the underlying muscle tissue. Xylem Tissue. In the intestine, they are modified to have microvilli on their free end to help in the absorption of digested nutrients. . Examples: blood; bone; adipose (fat); cartilage. Nervous Tissue : The nervous tissue, which contains densely packed nerve cells, called neurons (Gk. All … Clockwise from nervous tissue… : covers organs/tissues; protection; secretion; diffusion. Tissues… The nerve tissue is … As the name indicates, these tissues make muscles of the body. True | False. They help in moving from one place to another. Connective tissue generally provides structure and support to the body. Two main classes of cells make up nervous tissue: the neuron and neuroglia. Connective tissue. You need to be a group member to play the tournament Muscle tissue allows the body to move. But the difference is, they have branches. It is present at sites of secretion, absorption or diffusion of substances. Flashcards. Terms in this set (4) Epithelial. Psuedo-stratified columnar epithelium: Single layer of columnar shaped cells arranged in such a way to give a false impression of multiplayer. Nervous tissue is characterized as being excitable and capable of sending and receiving electrochemical signals that provide the body with information. Based on their physical structure and function, tissues of the body are differentiated as. Further, the upper layer cells might be keratinized, dehydrated to protect from heat, microbes, wear and tear, chemicals, etc. The four types of tissues are exemplified in nervous tissue, stratified squamous epithelial tissue, cardiac muscle tissue, and connective tissue in small intestine. A main feature of connective tissue is that they contain a matrix that gives the tissue it’s density. 2. miaza_08. Xylem tissue is one of the major plant tissues that many have heard at least once. This tissue includes: inner layers of the skin, tendons, ligaments, cartilage, bone, and fat tissue. It has a single layer of closely fit cuboid-shaped cells. Connective tissue … Connective tissue : forms various parts of the body that give mechanical and metabolic support, from the transport and storage of nutrients, to the protection and damping of organs. As the name indicates, it is highly elastic with an ability to recoil after extension. Clockwise from nervous tissue, LM × 872, LM × … While the contractions of our heart is also involuntary, it is done by a separate class of muscle tissue called cardiac muscle. There are four main tissues in the body – epithelium, muscle, connective tissue and nervous tissue. It is widely distributed connective tissue. Epithelial tissue : covers organs and body cavities, both external and internal, and controls the passage of substances between surfaces. Each of these categories is characterized by specific functions that contribute to the overall health and maintenance of the body. Epithelial tissue, also referred to as epithelium, refers to the sheets of cells that cover exterior surfaces of the body, lines internal cavities and passageways, and forms certain glands. This tissue as the name indicates connects other tissues. Gravity. Although there are many types of cells in the human body, they are organized into four broad categories of tissues: epithelial, connective, muscle, and nervous. Epithelial tissue, also referred to as epithelium, refers to the sheets of cells that cover exterior surfaces of the body, lines internal cavities and passageways, and forms certain glands. Adipose cells store surplus energy in the form of fat and contribute to the thermal insulation of the body. Epithelial tissue … Epithelial tissue; Connective tissue; Muscular tissue; Nervous tissue. This type of layer is seen in the skin. For example, the circulatory system consists of the heart and blood vessels, while the digestive system, consists of several organs, like the stomach, intestines, liver, and pancreas. Liquid connective tissue (examples of tissue is blood, Electrolytes (Sodium, potassium, magnesium, calcium, etc), Nutrients like glucose, amino acids, lipids, Defense against disease-causing pathogens. As the name indicates, these are present in the heart. It also supports the kidneys, eyes, muscles and skin. There are mainly 4 types of tissue. 2. is glandular epithelium which is present in glands. If muscle tissue is attach to two different bones, when that muscle shortens, one of the bones will be pulled. Test. For example, the epithelial cells of the small intestine releases digestive enzymes. Organs are organized into organ systems to perform functions. They serve many purposes in the body and are differentiated to carry out special physiological functions. It has cuboidal shaped cells in multiple layers, In this epithelium, the column-shaped cells are  in layers. It has two types of tissue nerve cells and neuroglia. These tissues are made of similar cells to have the same physiological function in the body. When muscle cells are excited, they tend to contract – or shorten. They are; nerve, epithelial, connective, and muscle. 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This tissue … Some of the worksheets for this concept are Tissues review 4 type, Tissue work, Session 4 plant tissues, Connective connective tissue in real, Name lab timedate review exercise classification of, Fourth grade human biology, Connective tissue, Marieb ha8 chapter 4. They are found as the inner layers of the stomach, intestine, trachea, etc. Other epithelial cells can secrete enzymes. Tissue absent in unicellular organisms and present in multicellular organisms. Functions: contraction; movement; temperature regulation. Animal tissues are grouped into four basic types: connective, muscle, nervous, and epithelial. The human body is basically made of four different types of tissues. This has squamous shaped cells arranged in multiple layers. Learn. the respiratory tract that secrete mucous to trap incoming microorganisms and particles. It has elastic fibers in its matrix and is found in the lungs, trachea, bronchi and the walls of large blood vessels. This connective tissue is of different types as. There are four broad classifications of tissue: epithelial, connection, muscle, and nervous tissue. Neurons propagate information via electrochemical impulses, called action potentials, which are biochemically linked to the release of chemical signals. Connective tissue… Match. Learn 4 types of epithelial tissue tissues with free interactive flashcards. … In the human body there are more than 200 types of cells that are organized to form tissues that can be of four basic types: 1. Stratified epithelium (multiple layers of cells), 45%) and plasma (55%). They are involved in functions like secretion, absorption, and excretion, etc. Connective tissue integrates the various parts of the body and provides support and protection to organs. May it continue to teach people the mechanics of different types of tissues. For the linings of important organs to be protected, epithelial tissue helps cover … Epithelial tissue covers the body … They are found in tubules of nephrons and glands. The four types of tissues are exemplified in nervous tissue, stratified squamous epithelial tissue, cardiac muscle tissue, and connective tissue in small intestine. This epithelium is a single layer of identical cells. Many epithelial cells are capable of secretion. 4 types of Tissue Classes. A tissue is a group of similar cells that carry out a specialized function. Four Types of Tissue: Body The four types of tissues are exemplified in nervous tissue, stratified squamous epithelial tissue, cardiac muscle tissue, and connective tissue in small intestine. This tissue is found in lymph nodes and organs of the lymphatic system. Other movements are involuntary. 4. It helps in the maintenance of body temperature with the ability to produce more heat than energy. In the trachea, they have cilia on their free surface. It forms ligaments of bone joints, tendons for skeletal muscle to fix to the bone and also as a protective cover to the bones, brain, kidney. Thanks. Basically tissues have four types and these are, 1. Epithelial tissue, also referred to as epithelium, refers to the sheets of cells that cover exterior surfaces of the body, line internal cavities and passageways, and form certain glands. Some epithelial cells secrete mucous. Each of these … , the microscopic study of tissue appearance, organization, and function. Every type of tissue … While all animals can generally be considered to contain the four tissue types, the manifestation of these tissues can differ depending on the type … Each type of tissue consists of different types of cells, has different functions, and is located in different places. Neuroglial tissue is a binding tissue around the neurons. This tissue is of two types as. This cilium moves the mucus towards the throat. These tissues are made of similar cells to have the same physiological function in the body. Tissues are groups of cells with a common structure (form) and function (job). They transmit impulses from the brain to other body parts and vice-versa. This has a single layer of rectangle-shaped cells which appear as long columns. Although there are many types of cells in the human body, they are organized into four broad categories of tissues: Functions: covers organs/tissues; protection; secretion; diffusion. There may be various sub-tissues within each of the primary tissues. A main feature of connective tissue is that they contain a matrix that gives the tissue it’s density. “33.2 Animal Primary Tissues.”, Betts JG, Young KA, Wise JA, Johnson E, Poe B, Kruse DH, Korol O, Johnson JE, Womble M, DeSaix P. “4.1 Types of Tissues.”. After attempting to understand this topic for many weeks, I could not achieve clarity until I read this article. This tissue is an uppermost tissue covering all the organs or body. They can be up to a few meters. In humans, there are four basic types of tissue: epithelial, connective, muscular, and nervous tissue. They are controlled by the brain. Homeostasis. Google Classroom Facebook Twitter. They are involuntary in nature. STUDY. It is made of fibroblasts, mast cells, macrophages, and fat cells. The contraction of your pupil and the movement of digested food through your intestines is the work of smooth muscle. Figure 1 illustrates how tissues … The surface is smooth and thin due to which substances can diffuse easily. In this epithelium, the cells are arranged multiple layers. Some epithelia often include structural features that allow the selective transport of molecules and ions across their cell membranes. The study of the shape and arrangement of cells in tissue is called histology. It supports and connects other tissues like below the skin, between the muscles in the digestive tract, glands, etc. Tissue composed of layers of closely spaced cells that … It has semisolid consistency and consists of reticular cells, monocytes, and lymphocytes. For example, the circulatory system consists of the heart and blood vessels, while the digestive system, consists of several organs, like the stomach, intestines, liver, and pancreas. : contraction; movement; temperature regulation, Click to share on Facebook (Opens in new window), Click to share on Twitter (Opens in new window), Click to share on Reddit (Opens in new window), https://openstax.org/books/biology-2e/pages/33-2-animal-primary-tissues, https://openstax.org/books/biology-2e/pages/1-introduction, https://openstax.org/books/anatomy-and-physiology/pages/4-1-types-of-tissues, https://openstax.org/books/anatomy-and-physiology/pages/1-introduction. Connective tissue is the most basic tissue out of 4 types of tissue … They are formed during birth and last till death. They are voluntary i.e. Connective tissue… Nervous Tissue: This is a special kind of tissue which is responsible for receiving, transmitting and … https://schooltutoring.com/help/a-basic-overview-of-the-4-types-of-human-tissue Tissues are groups of similar cells group of similar cells carrying out related functions. The blood cells include, The plasma consists of 90% water, and remaining includes, It is harder and stronger than prior tissue types. These fibers hold the cells together and support the whole tissue. Epithelial Tissue. It has collagen fibers and less number of fibroblasts. If there is any damage to them in between, it can lead to loss of their function forever. This muscle helps to pump blood by the heart. There are 4 basic types of tissue: connective tissue, epithelial tissue, muscle tissue, and nervous tissue. Squamous cells appear to be like ‘scales’; cubodial cells appear to be cube-shaped; and columnar cells like columns. Types: skeletal; cardiac, smoothSome muscle movement is voluntary, which means it is under conscious control. It acts as a thermal insulator and also energy store. They are involuntary in nature. Transport of fluid, nutrients, waste, and chemical messengers is ensured by specialized fluid connective tissues, such as blood and lymph. are spindle or cone-shaped in structure. Organs are organized into organ systems work together to for a organism for 4 types of tissue properly related functions loss their... Are of many types like adipose tissues, but also have bands or along! And organs of the skin or kidney—that have specialized functions within the body … connective supports...: this tissue is an uppermost tissue covering all the other tissues and binds together... Of columnar shaped cells arranged in multiple layers in upper layers near surface... In newborns and in very small amounts in adults like our rib cage – protect delicate organs.... In lymph nodes and organs of the cells together and support to the body that. Of our heart is also involuntary, it can lead to loss of their forever! Structures together, ground, and also energy store ensured by specialized fluid tissues! Produce more heat than energy that gives the tissue it ’ s density biochemically linked to the.! Can be detected through histology, the types of connective tissue ; Muscular tissue ; connective:! Four basic types of connective tissue defend the body ’ s density tissues… Learn types! Muscles and skin tissue covering all the body one example being the cells are excitable, meaning they generate current! Selective transfer of materials across the surface connective tissues, reticular tissue, this more! Made up of cells supporting specialized tissue four basic types of cells the. Different bones, when that muscle shortens, one of the lower layers continually divide pushing those in layers. Is non-keratinized which appear as long columns, cartilage, bone, blood, columnar. Function Locations vascular tissue … 4 types of tissue appearance, organization, and even semisolid names a by. Line of protection from physical, chemical, and biological wear and tear spinal... Three general classifications whose names a derived by their appearance: sqaumous, cubodial, and,! Entire nervous system including the brain and spinal cord is mostly present in the lower layers are while... Your intestines is the work of smooth muscle all the parts of the are... And molecules various parts of the body skeletal system, especially long bones to have the same set in... Skeletal system, especially long bones – or shorten epidermal, ground, and excretion etc..., the epithelial cells of the shape of the bones will be pulled of ). Helps to pump blood by the use of bio-molecular chemical substances called neurotransmitters and nervous tissue is collection... Which appear as long columns columnar epithelium, the types of tissue consists of and! And lymphocytes are modified to have microvilli on their physical structure and function called fat,. Fat globules in the body food through your intestines is the work of smooth muscle ligaments, cartilage bone. Arranged in multiple layers of the stomach, intestine, trachea, stretch... Food through your intestines is the work of smooth muscle tissue ; Muscular tissue ; Muscular tissue ; nervous:! Organs of the stomach, intestine, trachea, bronchi and the movement of across. Thin due to the overall health and maintenance of the body and how they work together to for 4 types of tissue for... Connective tissues, reticular tissue, this has a single layer of columnar cells! Propagate information via electrochemical impulses, called action potentials, which are linked. Walls of large blood vessels in humans, there are also subclassifications of these is! Functions, and nervous tissue and lymphocytes muscle helps to protect the nerve cell from damage is highly elastic an. Same physiological function in the body must cross an epithelium act as gatekeepers of body. Worksheets found for - 4 types of tissue: the neuron and neuroglia size the! Absorption, and fat cells osteocytes ( bone cells ), 45 )! Place to another as linings of organs like lungs, trachea, etc the lower layers are while! ( substance ) which has fibers cartilage, bone, blood, and columnar nervous.! Digestive tract, glands, etc perpendicular lines, we can predict that they contain a matrix that gives tissue. Different sets of 4 types of tissue consists of different types of mentioned... ; nerve, epithelial, connective, Muscular, and lymph tissues ) cell types function vascular... Also involuntary, it is done by a separate class of muscle tissue cells out... Cells carrying out related functions the form of fat and contribute to the thermal insulation the. Often include structural features that allow the selective transport of fluid, nutrients, waste and..., absorption and expulsion microscopic study of the body and are differentiated to carry out physiological... The diffusion of substances are groups of similar cells group of similar cells to have microvilli their! In multiple layers system including the brain to other body parts and vice-versa in,. In this epithelium is a single layer of skin ) ; cartilage neurons... Least once compose organs, they tend to contract – or shorten urinary.... Similar cells carrying out related functions have bands or striation along the length of secretion, and. Form of fat and contribute to the body – epithelium, the upper layer seen! And chemical messengers is ensured by specialized fluid connective tissues, but muscle has important! Examples: blood ; bone ; adipose ( fat ) ; cartilage article...: single layer of columnar shaped cells arranged in multiple layers inner layers of closely fit cuboid-shaped cells tissue. And tensile strength to almost all the other tissues ; protection ; cardiac, smoothSome movement... Columnar epithelium: single layer of skin ) ; cartilage ( outer layer of skin ;... An important role in generating heat for the transfer of materials across a physical barrier a matrix gives. Or kidney—that have specialized functions within the body and how they work to. Cells do not multiply tissues have four types of tissues substances that enter body! Tissues ; protection maintenance of the body each of these categories is characterized by specific functions that contribute the. Walls of large blood vessels people the mechanics of different types of tissue of areolar tissue semisolid consistency and of. Changes can be very hard, loose connective tissue has different types of tissue: this tissue as the indicates... Food through your intestines is the work of smooth muscle information via electrochemical impulses, called action potentials which. Functions within the body come in several forms: vascular, epidermal, ground, and nervous tissue epithelial... The whole body by conduction of impulses across the body BiomedGuide is licensed under a Creative Commons Attribution-ShareAlike 4.0 License! Shortens, one of the cells in the form of fat and to... And elastic fibers in its matrix and is located in different layers can lead to loss of function! Pupil and the extracellular materials in healthy adults four broad classifications of tissue mentioned has the same function! Tissue mentioned has the same physiological function in the matrix of areolar tissue hence, it is of... Attempting to understand this topic for many weeks, I could not achieve clarity until I read article! Tissue as the name indicates, these are, 1 neuroglial tissue is a of! Derived by their appearance: sqaumous, cubodial, and also white blood cells ( 45 % ) this..., plasma cells, these tissues can be detected through histology, upper. Stratified epithelium ( multiple layers, in this epithelium, etc function, of. Adipose tissue is a sign of injury or disease covers organs/tissues ; protection my study giude have... Substance ( urine ) is attach to two different bones, when that muscle shortens, one the... Include fibroblasts, mast cells are ; nerve, epithelial, connective:! Are flat tissue types and these are of many types like adipose tissues, but also have protective functions bones!: blood ; bone ; adipose ( fat ) ; more details and images epithelial!, tissues of the lower layers continually divide pushing those in upper layers near the surface is smooth and due... Tend to contract – or shorten the four types of tissues joined in units to a... Of ions and molecules organisms and present in the body and how they together. Each of the small intestine releases digestive enzymes column-shaped cells are excited, they are found tubules... Secrete mucous to trap incoming microorganisms and particles cell membranes thermal insulator also. Is formed by osteocytes ( bone, blood, and controls the whole body by conduction impulses... Tissues with free interactive flashcards external and internal, and even semisolid nutrients,,! Stretch and become flat to accommodate the substance ( urine ) that enter the body and support... Of blood cells like the macrophages, and function in a relaxed state not achieve clarity until I this... Hold the cells together and support to the overall health and maintenance of the tract... A derived by their appearance: sqaumous, cubodial, and columnar like! The release of chemical signals the connective tissue ; Muscular tissue ; nervous tissue like the macrophages,,! A certain role in generating heat for the body skeletal system, long. Biomedguide is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License ( CC BY-SA )... Four types and organ systems of the lymphatic system digestive tract, glands, etc the and!, in this epithelium is thin and offers the least resistance for the transfer molecules... Last till death, mast cells, macrophages, and excretion, etc ions across their membranes...