Answer:

The three types of exocrine glands are:

1. Holocrine Glands.

2. Merocrine Glands.

3. Apocrine Glands.

The exocrine glands are of three types:

°Holocrine Glands

°Merocrine or Eccrine Glands

°Apocrine Glands

Holocrine Glands

- These are released by the rupture of the plasma membrane. Produced in the cytoplasm of the cell, these destroy the cells and secrete the product in the lumen.

Merocrine/Eccrine Glands

-The substance is secreted directly into the duct through the cellular channels. There is no rupturing of cell wall involved.

Apocrine Glands

-They bud off a part of their cellular cytoplasm and membrane and release the substance into the ductal system.