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Merocrine sweat glands
What are the most numerous sweat glands (3-4 million in adults)?
simple tubular glands
What are the shape of merocrine glands?
watery perspiration that helps cool the body
What is the consistency and function of merocrine sweat glands?
contract in response to stimulation by sympathetic nervous system and squeeze perspiration up the duct
groin, anal region, axilla, areola, bearded areas in mature men
Where are apocrine sweat glands located?
thicker, milky, and contains fatty acids. scent glands that respond to stress and sexual stimulation
What is the consistency and function of apocrine swaet glands?
When do apocrine sweat glands form?
chemicals that influence the physiology of behavior of other members of the species
disagreeable body odor produced by bacterial action of fatty acids
inhibits bacterial growth
does not produce visible wetness of skin
sweating with wetness of the skin
oily secretion produce by sebaceous gland
flask-shaped and opening into hair follicle
What is the shape and location of sebaceous glands?
Holocrine gland- secretion consists of broken down cells (replaced by mitosis)
what kind of glands are sebaceous glands and what does this mean?
keeo skin and hair form becoming dry, cracked and brittle
What is the major rolle of sebaceous glands?
external ear canal
Where are ceruminous glands found?
secretion of ceruminous glands combined with sebum and dead epithelial cells
What forms earwax (cerumen)?
-keeps eardrum pliable
-waterproofs the canal
-makes guard hairs of ear sticky to help protect from foreign invaders
What are the functions of ceruminous glands?
simple, coiled tubular glands
What is the form of ceruminous glands?
richer secretion released by ducts opening into the nipple
How are mammary glands modified apocrine glands?
mammary ridges of milk lines
two rows of mammary glands in most mammals