The skin in health and disease.

Date:
[1888?]
Catalogue details

Licence: Public Domain Mark

Credit: The skin in health and disease. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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    has its seat in them j these are the sebaceous or sebi- parous glands. While the sweat glands are composed of a single tube coiled upon itself at its lower extremity, which is situated in the very deepest portions of the skin, the sebaceous glands are rarely, if ever, formed of a single tube, but have a duct, more or less straight, with a mass of glands grouped about its deeper end, form- ing what is known as a racemose gland, from the resemblance to a cluster of grapes (Latin, racemus). The sebaceous glands are almost invariably con- nected with the Large Sebaceous Gland. Greatly mag- hairs; upon hairy nified. parts, as the scalp, i. Hair in its follicle. 2,3,4,5- Lobules of the they form appeild- gland. 6. Excretory duct traversed by the hair. g at ^ of the hairs, and their ducts open into the hair fol- licles. Generally, there are two to each hair, situ- ated opposite each other; but in some situations large hairs have a number, even from four to eight, situated around them, forming a sort of collar about the hair. In some situations, on the other hand, as on the Fig. 4.