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Sweat pore, an anatomical structure of the skin of humans (and other mammals) used for secretion of sweat; Hair follicle, an anatomical structure of the skin of humans (and other mammals) used for secretion of sebum; Canal pore, an anatomical structure that is part of the lateral line sense system of some aquatic organisms
Sweat glands, also known as sudoriferous or sudoriparous glands, from Latin sudor 'sweat', [6] [7] are small tubular structures of the skin that produce sweat.Sweat glands are a type of exocrine gland, which are glands that produce and secrete substances onto an epithelial surface by way of a duct.
The negative aspect of the oily-skin type is that oily complexions are especially susceptible to clogged pores, blackheads, and buildup of dead skin cells on the surface of the skin. [42] Oily skin can be sallow and rough in texture and tends to have large, clearly visible pores everywhere, except around the eyes and neck. [42]
Eccrine sweat glands are found in virtually all skin, with the highest density in the palms of the hands, and soles of the feet, and on the head, but much less on the torso and the extremities. In other mammals, they are relatively sparse, being found mainly on hairless areas such as foot pads.
Seborrheic-like psoriasis (also known as "Sebopsoriasis", [36] and "Seborrhiasis") is a skin condition characterized by psoriasis with an overlapping seborrheic dermatitis. [ 3 ] : 193 Sebaceous adenoma , a benign slow-growing tumour —which may, however, in rare cases be a precursor to a cancer syndrome known as Muir–Torre syndrome .
Some skin secretions are associated with body hair. Skin secretions originate from glands that in dermal layer of the epidermis. Sweat, a physiological aid to body temperature regulation, is secreted by eccrine glands. Sebaceous glands secrete the skin lubricant sebum. Sebum is secreted onto the hair shaft and it prevents the hair from splitting.
Skin is the layer of usually soft, flexible outer tissue covering the body of a vertebrate animal, with three main functions: protection, regulation, and sensation. Other animal coverings , such as the arthropod exoskeleton , have different developmental origin , structure and chemical composition .
The heat-regulatory function of the hypothalamus is also affected by inputs from temperature receptors in the skin. High skin temperature reduces the hypothalamic set point for sweating and increases the gain of the hypothalamic feedback system in response to variations in core temperature. Overall, however, the sweating response to a rise in ...
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