察爾斯大夫 美麗殿堂 Dr. Charles Meridien Palace

Apocrine

Exocrine Secretion：

• Merocrine or Eccrine – by Exocytosis

• Apocrine – by Membrane budding（Decapitation secretion）

• Holocrine – by Membrane rupture

Apocrine is a term used to classify exocrine glands whose Cells bud their secretions off through the plasma membrane producing membrane-bound vesicles in the lumen.

This method is also called Decapitation secretion.

The apical portion of the secretory cell of the gland pinches off and enters the lumen.

Apocrine secretion is less damaging to the gland than holocrine secretion（which destroys a cell）but more damaging than merocrine secretion（exocytosis）.

An example of true apocrine glands are mammary glands, responsible for secreting breast milk.