APOCRINE, HOLOCRINE & ECCRINE GLANDS

Apocrine glands

Apical parts of the glands shed off following secretion

eg:Atypical Sweat glands,ceruminous glands,Glands of Moll,mammary glands.

Holocrine glands

WHOLE part of the gland is destroyed following secretion

eg:Sebaceous glands

Eccrine glands/Merocrine/Epicrine glands

Glands remain intact(exocrine glands).

Majority of sweat glands are Eccrine glands.

Sweat Glands

Sweat glands are of two types.

1.Eccrine/merocrine—–>Typical sweat glands.

A)Distributed all over the body.

B)Innervated by cholinergic system.

C)Secretory portion has clear cell,dark cells,myoepithelial cells.

2.Apocrine—–>Atypical sweat glands.

A)Axilla,monspubis,circumanal area,areola and nipple.

B)Excretory ducts open into hair follicles.

Functional after puberty

C)Supplied by adrenergic nerves.