Question

Which of the following are true about the mode of secretion of the exocrine glands?

a. Merocrine glands are not altered by secretory process
b. Apocrine cells are destroyed then replaces after secretion
c. Holocrine cells are slightly damaged but repair themselves
d. these glands are ductless

Answer 1

Modes of secretion of exocrine glands include merocrine, apocrine, and holocrine. Merocrine glands release their secretions without altering the cell. Apocrine glands secrete by pinching off the apical portion of the cell. Holocrine glands release secretions by destroying and rupturing the entire cell.

Step-by-step explanation:

The modes of secretion of exocrine glands are defined by the way in which the cells release their products.

Merocrine glands release their secretions through exocytosis without any alteration to the cell. For example, sweat glands are merocrine glands.

Apocrine glands secrete their products by pinching off the apical portion of the cell. Mammary glands are an example of apocrine glands. The apical portion of the cell is released along with the secretion.

Holocrine glands store their secretions until the entire cell is destroyed and ruptured. New cells replace the destroyed ones. Sebaceous glands, which produce the oils on the skin and hair, are holocrine glands.