Physiology, Exocrine Gland
2019
A gland is a functional unit of cells that works together to create and release a product into a duct or directly to the bloodstream. Two principal types of glands exist: exocrine and endocrine. The key difference between the two types is that, whereas exocrine glands secrete substances into a ductal system to an epithelial surface, endocrine glands secrete products directly into the bloodstream . Exocrine secretions form in the acinus, a small cluster of cells at the origination of glandular ducts. Exocrine glands subclassify into subtypes based on the method of secretion, the compound produced, or the shape of the gland.
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