1. HISTOLOGY Four Basic Types of Tissue 1.Epithelial 2.Connective 3.Muscle 4.Nerve Thanks to Pam Brannock (USC Biology,Hilbish Lab) for creating this PowerPoint

2. EPITHELIAL TISSUE  Cells are bound tightly together  Little extracellular material  Arranged in sheets  Cover internal and external surfaces  Often control passage of material  Classified by shape of cells and number of layers Pg 154-155; slides 157-158

3. EPITHELIAL TISSUE CELL SHAPE  Squamous shape  Thin, flat cells  Look like fried eggs  Cubodial shape  square shape- cross section  6sided polygon- surface  Columnar  Rectangular- cross section  Polygonal- surface view CELL NUMBER  Simple  Single layer  Stratified  2+ layers  Pseudostratified  Appear stratified- but not  Transitional  Change shape

4. EPITHELIAL TISSUE SIMPLE SQUAMOUS  Single layer  Squamous shape  Lining of body cavity, lungs, blood vessels

5. EPITHELIAL TISSUE SIMPLE CUBOIDAL  Single layer  Cuboidal shaped  Kidney tubules, glands

6. EPITHELIAL TISSUE SIMPLE COLUMNAR  Single layer  Columnar shape  Lining of digestive tract  Modified by presence of cilia

7. EPITHELIAL TISSUE STRATIFIED SQUAMOUS  Multi layer  Outer most layer- squamous cells  Inner- cuboidal or columnar  Lining of mouth, esophagus, skin

8. EPITHELIAL TISSUE PSEUDOSTRATIFIED COLUMNAR  One layer  Appears stratified  Respiratory tract

9. CONNECTIVE TISSUE  Abundant extracellular material  Matix (dominant part)  Fiber, cells in liquid, gel, or solid matrix  Function  Bind and/or support other tissue Pg 154, 156, 159; slides 158-161

10. CONNECTIVE TISSUE CONNECTIVE TISSUE PROPER  Matrix consist of fibers  Loose or areola  Few fibers  Delicate arrangement  Fibrous  Ex. Tendons  Abundant, well organized fiber

11. CONNECTIVE TISSUE ADIPOSE TISSUE  Loose connective  Store large droplets of fat BLOOD  Lymph  Liquid matrix  Sometimes in different category  RBC- Red Blood Cells  WBC- White Blood Cells

12. CONNECTIVE TISSUE CARTILAGE  Chondrocytes  Small cavities- lacunae  Rubbery consistency (matrix)  Ear, nose

13. CONNECTIVE TISSUE BONE  Osteocytes  Small cavities- lacunae  Hardest CT  Impregnated w/ calcium salts  Spongy  Loose rods of bones  Ends of arms and legs  Compact  Shafts of long bones  Tightly organized

14. MUSCLE TISSUE  Cells have ability to contract  Function  Locomotion  Other body movement Pg 156-157,162; slides 161

15. MUSCLE TISSUE SKELETAL  Voluntary movement  Long and cylindrical  Transverse striation  Each fiber is multi-nuclear

16. MUSCLE TISSUE SMOOTH  Involuntary movement  Predominant  Long, spindle shape  Single nucleus  Internal organs

17. MUSCLE TISSUE CARDIAC  Striations  Involuntary  One nucleus  Deep center  Heart muscle

18. NERVE TISSUE  Cells very high ability to  Respond to stimuli  Transmit impulses Pg 157, 163; slides 161

19. NERVE TISSUE NEURON  Cell Body(3)  Dendrites (5)  Axon(1)