secrete product via a system of ducts that opens upon the surface of the body
secrete hormones typically into spaces between the secretory cells that then enter the bloodstream
What is Merocrine?
most common form of secretion.
product released by exocytosis, most sweat glands
What is holocrine?
Whole cell ruptures during release of product.
What is aprocrine?
secretion is derived from the apex of the cell (breast)
ARE NOT fully destroyed.