Module 7: Figure sweat gland function

Structure and function of sweat glands.

The tubular sweat gland consists of a secretory coil that secretes an isotonic NaCl solution and a reabsorptive duct that reabsorbs Na+ and Cl−- to produce the hypotonic sweat that flows on to the surface of the skin. The secretory coil is innervated by both parasympathetic and sympathetic neurons. See text for details of the mechanism responsible for secretion and reabsorption in the two regions of the gland. Information for this figure was obtained from Quinton (2007). Paul Quinton also provided information on the secretory and reabsorptive mechanisms.