What are the different types of tissues? BIOL 2010 Human Anatomy & Physiology I Tissues grouped into major types based on: * Structure of cells, * Composition of noncellular extracellular matrix and * Cell function 4 MAJOR Categories: Histology: Microscopic Study of Tissues ___________: removal of tissues for diagnostic purposes ___________: examination of organs of a dead body to determine cause of death

Epithelial Cells __________________ Covers body surfaces and forms glands –Outside surface of the body –Lining of digestive, respiratory and urogenital systems, heart, blood vessels and of body cavities Has _____, _____, and ______ surfaces Specialized cell contacts Regenerate Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Nucleus Free surface Capillary Surface view Cross-sectional view Lung Pleura LM 640x Epithelial cells with little extracellular matrix Connective tissue Basement membrane b: © Victor Eroschenko; c: © Ed Reschke What are the different types of tissues?

_____________ underlying structures; e.g., epithelium lining the mouth Acting as ____________; e.g., skin Permitting the passage of substances; e.g., nephrons in kidney ______________ substances; e.g., pancreas ______________ substances; e.g., lining of small intestine What are the functions of epithelial tissue?

Number of layers of cells –_________ one layer of cells. Each extends from basement membrane to the free surface –_________ more than one layer. Shape of cells of the apical layer used to name the tissue. –________________ tissue appears to be stratified, but all cells contact basement membrane so it is in fact simple Shape of cells –___________ flat, scale-like –___________ about equal in height and width –___________ taller than wide What specific types of epithelial tissue are there?

Simple: allows diffusion of gases, filtration of blood, secretion, absorption Stratified: protection, particularly against abrasion Squamous: allows diffusion or acts as filter Cuboidal and columnar: secretion or absorption. May include ____________that produce and secrete mucus. What functions are associated with specific types of epithelial tissue?

Connective Tissue Abundant; found in every organ Consists of cells separated by extracellular matrix Many diverse types Performs variety of important functions What are the different types of tissues?

________________ organs as a capsule and/or layers _______ tissues to one another (tendons & ligaments) _________ and movement (bones) __________ (fat) __________ and insulate (fat) Transport (blood) Protect (cells of the immune system) What are the functions of connective tissue?

4-16 Connective Tissue Proper –___________ (areolar). Collagenous fibers are loosely arranged –___________ Fibers form thick bundles that nearly fill all extracellular space Supporting CT – Fluid CT – What are the major types of connective tissue?

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4-26 Muscle tissue characteristics –_____________ or shortens with force –Moves entire body and pumps blood Types –___________ most attached to skeleton, but some attached to other types of connective tissue. Striated and voluntary. –___________ muscle of the heart. Striated and involuntary. –___________ muscle associated with tubular structures and with the skin. Nonstriated and involuntary. What are the different types of tissues?

Nervous tissue _________ or nerve cells have the ability to produce action potentials (communication) What are the different types of tissues?

Support cells of the brain, spinal cord and nerves Nourish, protect, and insulate neurons What are the different types of tissues? Nervous tissue