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Anatomy. Chapter 5 Tissues. cells- basic unit of structure and function tissues- cells that are organized into groups and layers carry out specific functions. 4 major types of tissues:. epithelial- forms protective coverings fxns to secrete and absorb covers body surfaces and organs
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Anatomy Chapter 5 Tissues
cells- basic unit of structure and function • tissues- cells that are organized into groups and layers • carry out specific functions
4 major types of tissues: • epithelial- forms protective coverings fxns to secrete and absorb covers body surfaces and organs 2. connective- supports and binds structures found thru-out body
3. muscle- produces body movements or moves substances 4. nervous- conducts impulses that integrate/coordinate body activities
ALL tissues contain extracellular matrix • non-living • transmits signal from outside in • influences how cells fxn
Epithelial Tissue • list characteristics of ET • list 4 fxns • describe how classified; include special terms (upper 1/5)
remaining 9 types of epithelial tissue 1. name drawing description fxn location
Epithelial Tissues • always has 1 free surface • basement membrane on underside of ET; anchors it to the connective tissue below • non-living layer of extracellular matrix
ET usually lacks blood vessels (avascular) • cells readily divide • cells tightly packed • 4 fxn: • covers organs • forms lining of inner body cavities • lines hollow organs • may secrete, absorb, excrete substances
classified according to: shape and # layers of cells • Shapes: 1. squamous- thin, flattened cells 2. cuboidal- cube-shaped cells 3. columnar- thin, elongated cells • # layers: 1. simple- 1 layer of cells 2. stratified- 2 or more layers of cells
Glandular • makes up glands • 2 types: • exocrine- gland secretes products into ducts that open onto surface • endocrine- glands that secrete products into blood or fluids
Connective Tissues Foldable • use info on board
Connective Tissues Catalog • loose connective tissue • aka areolar