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Apocrine Sweat Glands
Have a more limited distribution, but are found in the following areas;
Axilla (underarm),
Perianal (near the anal area)
Areole, (nipple)
Periumbilical (around the belly button),
Genital area,
External ear canal,
Eyelids
Also consists of ducts and secretory coils, but these glands are larger than eccrine glands and open onto hair follicles.
Function:
There are no known functions attributed to apocrine sweat glands in humans.
They are a genetic remnant of the mammalian sexual scent gland
Composition of apocrine sweat:
Thick, milky fluid
Excretions include protein, ammonia, lipids, chromogranins (family of proteins)
Bacterial decomposition leads to odor
Produce proteins equivalent to pheromones in non-human mammalian species
Nervous Control:
Activated by same sympathetic nerves as eccrine glands in the same region,
But different nerve fibers and different nerve transmitters control the glands
Respond to catecholamine, not acetylcholine (unlike ecrine glands)
Do not respond to Botox® treatment
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HUMBLE CALLEN BOWE :)