In humans, apocrine sweat glands are found only in certain locations of the body: the axillae (armpits), areola and nipples of the breast, ear canal, eyelids, wings of the nostril, perineal region, and some parts of the external genitalia. (wikipedia.org)
Most non-primate mammals, however, have apocrine sweat glands over the greater part of their body. (wikipedia.org)
Domestic animals such as dogs and cats have apocrine glands at each hair follicle and even in their urinary system, but eccrine glands only in foot pads and snout. (wikipedia.org)
Their apocrine glands, like those in humans, produce an odorless, oily, opaque secretion that gains its characteristic odor upon bacterial decomposition. (wikipedia.org)
The secretory tubules of apocrine glands are single layered, but unlike the eccrine secretory tubules, contain only a single type of ductal epithelial cell, varying in diameter according to their location, and sometimes branching off into multiple ducts. (wikipedia.org)
For most mammals, however, apocrine sweat glands secrete an oily (and eventually smelly) compound that acts as a pheromone, territorial marker, and warning signal. (wikipedia.org)
Being sensitive to adrenaline, apocrine sweat glands are involved in emotional sweating in humans (induced by anxiety, stress, fear, sexual stimulation, and pain). (wikipedia.org)
Apocrine sweat glands were originally thought to use only apocrine secretion: vesicles pinch off from the secretory cells, then degrade in the secretory lumen, releasing their product. (wikipedia.org)
The "axillary organs", limited regions with equal numbers of apocrine and eccrine sweat glands, only exist in humans, gorillas, and chimpanzees. (wikipedia.org)
In humans, the apocrine glands in this region are the most developed (with the most complex glomeruli). (wikipedia.org)
There is currently no evidence that any sweat glands vary substantially by racial group, with most studies claiming to find variation being subject to methodological flaws. (wikipedia.org)
It is a chronic, inflammatory skin disease that affects the hair follicles and sweat glands. (jshaoda.com)
Also, its cause is thought to be related to the overactivity of the sebaceous glands, which leads to the accumulation of sweat and sebum in the hair follicles. (jshaoda.com)
HS symptoms most commonly appear on the skin in areas where there are a lot of sweat glands and hair follicles, such as the armpits, groin, and scalp. (jshaoda.com)
These are the glands that secrete sweat into the hair follicles. (jshaoda.com)
The gland is large and spongy, located in the subcutaneous fat deep in the dermis, and has a larger overall structure and lumen diameter than the eccrine sweat gland. (wikipedia.org)
Sebum1
Sweat and sebum are mixed in the hair follicle and arrive mixed at the epidermal surface. (wikipedia.org)
Proteins1
The apocrine gland secretes an oily fluid with proteins and lipids that is odorless before microbial activity. (wikipedia.org)