Epithelial Tissue Quiz

1. A pathologist describes an epithelial cell as polarized. Which observation best demonstrates this property?

2. A group of epithelial cells has no duct and releases hormones into surrounding fluid, from which they enter the bloodstream. What type of gland is it?

3. After superficial skin cells are shed, which process most directly supplies replacement epithelial cells?

4. Which feature most clearly distinguishes epithelial tissue from most connective tissues?

5. Which cell is a unicellular epithelial gland specialized to secrete mucus?

6. A very thin lining is needed so gases can diffuse rapidly across the walls of lung alveoli. Which epithelium best suits this function?

7. A gland releases its product through a duct that opens onto an epithelial surface. How is the gland classified?

8. Which epithelial type allows the urinary bladder lining to stretch and then return toward its original shape?

9. Food abrasion repeatedly affects the esophagus, which requires protection while retaining a moist surface. Which lining is most appropriate?

10. A tissue sample from the outer epidermis contains many cell layers and a surface layer of dead, keratin-filled cells. What is it?

11. A respiratory passage has nuclei at different heights, but every epithelial cell contacts the basement membrane. Cilia move mucus along the surface. Which tissue is this?

12. An epithelium contains no blood vessels. How do most of its cells receive oxygen and nutrients?

13. A kidney tubule performs absorption and secretion through a single layer of roughly cube-shaped cells. How should its lining be classified?

14. Cells lining part of the small intestine need a larger apical surface area for absorption. Which specialization most directly provides it?

15. A lining must propel trapped particles across its surface rather than primarily increase absorption. Which apical structure is best suited to this task?

16. What is a central role of the basement membrane beneath an epithelium?