1. Warm-Up What is a tissue? The study of tissues is called ______.
What are the 4 main types of tissues? (See the intro to Chapter 4 in textbook)

2. Warm-Up
What type of epithelial cell is shown below? 1. 2. 3. 4.

3. Tissue: The Living Fabric
Chapter 4
Tissue: The Living Fabric

4. ________: group of cells that are similar in structure and function
_____________: study of tissues
Types of Tissues:
______________(covering)
______________(support)
______________(movement)
______________(control)

5. Epithelial Tissue
“epithe” = laid on, covering
Structure: -
Function:

6. Special Properties Polarity
_______________= exposed free surface or edge (some with microvilli, cilia)
_______________= lower, attached surface
Specialized contacts
Fits close together to form continuous sheets

7. Special Properties Supported by connective tissue
Rests on __________________________
No blood supply (__________________)
Rely on diffusion and underlying connective tissue for food/O2
Regeneration – Replace lost cells

8. Classification Two names = (# cell layers) + (shape of cells)
_______________: simple or stratified
___________: squamous, cuboidal, or columnar

11. Simple Epithelium

12. Simple Epithelium Simple squamous -
Capillary walls, air sacs in lungs, kidney filtration
Serous membranes: slick layer lining ventral body cavity and its organs

13. Simple Epithelium Simple cuboidal -
Lines ducts of glands (salivary), kidney tubules, ovary surface

14. Simple Epithelium Simple columnar - Lines digestive tract
Microvilli, cilia
Mucous membranes: lubricating mucus

15. Simple Epithelium Pseudostratified columnar
Rests on basement membrane – false impression (pseudo) of being multi-layered
Secretes or absorbs
Respiratory tract – cilia propels mucus from lungs

16. Stratified Epithelium

17. Stratified Epithelium
Stratified squamous -
Esophagus, mouth, outer portion of skin

18. Stratified Epithelium
Stratified cuboidal -
Mainly in ducts of large glands (sweat, mammary, salivary)
Sweat Gland
Esophageal Gland

19. Stratified Epithelium
Stratified columnar -
Pharynx, male urethra, lining ducts

20. Transitional Epithelium
Able to change shape (cuboidal  squamous)
Lining of hollow urinary organs (bladder, ureter, urethra) -

21. Glandular Epithelium Gland: make and secrete a particular product
2 Types:
_________________: produce hormones secreted into tissue fluid or bloodstream
Exocrine gland: secrete products into ducts  onto body surfaces or body cavities -

22. Exocrine Glands
Unicellular
Multicellular - -