Sweat gland

Author: Prof. Dr. med. Peter Altmeyer

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Last updated on: 29.10.2020

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Synonym(s)

apocrine sweat glands; eccrine sweat glands; Glandula sudorifera; Sweat glands

Definition
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Exocrine, tubular glands, which are divided into apocrine and eccrine sweat glands (see Table 1). The eccrine (free) sweat glands produce sweat for thermoregulation. Their number is 2-3 million, with an average of 140-350/cm2 being detected. In descending order, the density is highest in the palmae and plantae, on the head, trunk and extremities. The eccrine sweat glands respond to thermal, emotional and gustatory stimuli. In the last two cases, sweating is restricted to certain areas of the skin. The apocrine (follicle-bound) sweat glands (axillae, inguinal region, circumanal, in the face, especially in the nasolabial folds) produce a lipid-containing, cloudy, slightly viscous sweat with endogenous scents, see also sweat gland disorders.

Literature
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  1. Fiedler HP (1991) The physiology of perspiration. Medical cosmetology 21:161-173

Tables
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Apocrine and eccrine sweat glands

Apocrine sweat glands

Eccrine sweat glands

Synonym

Glandulae sudoriferae majores

Glandulae sudoriferae minores

Development

Rungs laterally from the hair germ into the supraseboglandular hair follicle

Emergence from the endocrine sweat gland germ

Estuary

Into the supraseboglandular hair follicles

At the epidermal surface

Lumen

Wide: 200 μm

Eng: 20 μm

Full secretary

Little

Much

Control system

Hormonal, from puberty

Thermal and emotional

Odour

Body's own fragrances

Totally odourless

Function

Animal: Control of sexual behaviour and territory marking.

Thermoregulation/ excretion

Human: Atavistic or unknown.

Localization

Especially underarms, perimamillary, periumbilical, regio pubis, regio anogenitalis. Only sporadically on head and trunk.

On the whole integument (about 2-3 million). Especially on soles of feet, palms of hands and forehead.

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Last updated on: 29.10.2020