H3 - Glandular epithelia

Question 1

Describe the process of endocytosis

Answer 1

the membrane invaginate and fuses around the extracellular material forming a endosome

Question 2

What is phagocytosis?

Answer 2

bacteria is engulfed by phagosome that binds to lysosome forming phagolysosome and is the digested

Question 3

What gland secrets products at the basal end of the cell and distributes them to the vascular system?

Answer 3

endocrine

Question 4

What are the features of endocrine glands>

Answer 4

• no ducts

- contain cappilaries and vascular space

Question 5

What do exocrine glands do?

Answer 5

they secrete products to the apical end where they are secreted into a lumen, duct or body surface

Question 6

How can exocrine glands be classified?

Answer 6

• duct morphology
• arrangement
• number of secretory cells
• type of product
• mechanism of release

Question 7

Describe the merocrine mechanism and what are the products?

Answer 7

vesicles merge with the membrane and products are releases by exocytosis
products are usually proteins

Question 8

What is the mechanism which membrane bound vesicles are pinched off at the apex into extracellular space?

Answer 8

apocrine

Question 9

What are the two mechanisms which products are usually lipids?

Answer 9

apocrine and holocrine

Question 10

What is the vesicular transport where whole cells are released from epithelium and disintegrate releasing products?

Answer 10

holocrine

Question 11

What is a residual body?

Answer 11

reminants of digestion that remain in the cell after phagocytosis

Question 12

What cells help expel excretions from contracting glands?

Answer 12

myoepithelial cells