Article

International Journal of Biometeorology

, Volume 35, Issue 3, pp 180-186

The evolution of sweat glands

  • G. Edgar FolkJr.Affiliated withDepartment of Physiology and Biophysics, The University of Iowa
  • , A. SemkenJr.Affiliated withDepartment of Geology, The University of Iowa

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Abstract

Mammals have two kinds of sweat glands, apocrine and eccrine, which provide for thermal cooling. In this paper we describe the distribution and characteristics of these glands in selected mammals, especially primates, and reject the suggested development of the eccrine gland from the apocrine gland during the Tertiary geological period. The evidence strongly suggests that the two glands, depending on the presence or absence of fur, have equal and similar functions among mammals; apocrine glands are not primitive. However, there is a unique and remarkable thermal eccrine system in humans; we suggest that this system evolved in concert with bipedalism and a smooth hairless skin.

Key words

Evolution Paleophysiology Primates Sweating Thermoregulation