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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

Anatomy

Chapter 5

Tissues

slide2

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
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

slide4

3. muscle- produces body movements or moves substances

4. nervous- conducts impulses that integrate/coordinate body activities

slide5

ALL tissues contain extracellular matrix

      • non-living
      • transmits signal from outside in
      • influences how cells fxn
epithelial tissue
Epithelial Tissue
  • list characteristics of ET
  • list 4 fxns
  • describe how classified; include special terms

(upper 1/5)

slide7

remaining 9 types of epithelial tissue

1. name

drawing description

fxn

location

epithelial tissues
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
slide9

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
slide10

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
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 catalog
Connective Tissues Catalog
  • loose connective tissue
  • aka areolar