How do apocrine, exocrine, merocrine, and holocrine glands differ?

Hint: Apocrine, merocrine and holocrine glands are all different types of exocrine glands. There are many exocrine glands in our body such as sweat, salivary, mammary, liver, and pancreas. The pancreas is both exocrine as well as endocrine hence it is known as a mixed gland.

Complete Answer:


Additional information:
-The ciliary glands present in the eyelids, mammary glands, and ceruminous glands (ear wax producing glands) are all examples of modified apocrine glands.
-Apocrine sweat glands are present in fewer numbers as compared to merocrine or eccrine sweat glands that are present on the rest of the body.
-The most damaging type of secretion to cells is holocrine, whereas merocrine is the least damaging, and apocrine is in between them.

Note:
-Endocrine glands are the glands that release their secretions directly into the blood and hence they are known as ductless glands. Their secretions are specifically known as hormones.
-Hormones can be defined as non-nutrient substances whose purpose is to act as intracellular messengers.
-Exocrine glands are further divided into a glandular part and duct part. The glandular part may be in the form of tubes or acini and the duct part can be branched or unbranched.