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Histology, Histochemistry, and Electron Microscopy of Sebaceous Glands in Man

  • John S. Strauss
  • Peter E. Pochi
Part of the Handbuch Der Haut- und Geschlechtskrankheiten book series (HAUT, volume 1 / 1)

Zusammenfassung

The sebaceous glands of man are distributed in the skin throughout all areas of the body except the palm, soles and the dorsum of the feet. Sebaceous glands are also found in the ear canal where they should not be confused with the ceruminal glands which are of apocrine origin. The sebaceous glands are associated with hair follicles, although in mucous membranes, as will be subsequently mentioned, they open directly to the surface. Wherever they are found, a great variation is observed in the number of the sebaceous glands per unit area of the skin surface. Detailed studies on the density of gland distribution are at best incomplete. A series of papers from Okajima’s laboratory have described the distribution and size of the various appendages, including the sebaceous glands, of human skin. Unfortunately, while meticulous calculations have been made, it is difficult to interpret the data since each report considers the appendages of single individuals, and there is a wide variation evident with respect to age and race. Included in the reports are results of the examination of an 8-month Japanese fetus (Kosaka, 1932), a Japanese newborn infant (Taniguchi, 1931), a 2 year-old Korean child (Taniguchi, Kosaka and Nakano, 1933), a 6 year-old Japanese child (Koibuchi, 1932), and a 45 year-old German man (Yamada, 1932). The volume of the sebaceous glands was greatest in the only adult subject studied in this series (Yamada, 1932). As will be indicated later in this chapter, the sebaceous glands would be expected to be larger in adults than in children. Thus, it is erroneous to consider that the above findings indicate that large glands are a racial characteristic as has been interpreted by Kallapravit (1963). The average values for sebaceous gland volume in the areas studied in the adult man (Yamada, 1932) are shown in Table 1. The gland volumes, in descending order of size, were found on the forehead, scalp, back, forearm, upper arm, stomach, thigh and calf. The table also shows that individual gland volume decreases in a similar fashion.

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© Springer-Verlag Berlin Heidelberg 1968

Authors and Affiliations

  • John S. Strauss
    • 1
  • Peter E. Pochi
    • 1
  1. 1.BostonUSA

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