3.1 - Lecture - Epithelia/Cell Morphology

Question 1

Simple Squamous epithelium

Answer 1

• uncommon except for:
  A) endothelium (lining vasculature)
  B) mesothelium (epithelium of a serosa)

Question 2

Epithelium

Answer 2

• sheet of cells that has a polarity, apical surface (towards lumen) and basal surface (towards a basement membrane interface with connective tissue)
• epithelial cell membrane can be divided into apical, lateral, and basal domains based on cell’s position relative to the epithelium

Question 3

Simple Cuboidal Epithelium

Answer 3

found in the ducts of some glands

Question 4

Simple Columnar Epithelium

Answer 4

• very common, especially in endotehlium-derived tissues

-

Question 5

Stratified Squamous Epithelium

Answer 5

• very very common

- Divided into keratinized (skin) + non-keratinized (lining wet mucosa)

Question 6

Stratified Cuboidal Epithelium

Answer 6

Duct of eccrine sweat gland is the ONLY common place these are found

Question 7

Stratified Columnar Epithelium

Answer 7

• uncommon

- found on certain portions of the eyelid

Question 8

Pseudostratified epithelium

Answer 8

• containing cell types of multiple shapes
• still one layer thick (all cells contact basement membrane, but may not appear to)
• commonly found in trachea (called the respiratory epithelium)
• also may be found in male reproductive organs

Question 9

Respiratory Epithelium

Answer 9

the name for the pseudostratified epithelium inside the trachea

Question 10

Transitional Epithelium

Answer 10

• stratified epithelium that reduces to fewer layers whens stretched (all cells contact basement membrane)
• also referred to as urinary epithelium
• ONLY found in urinary system