Surgical applied anatomy / by Sir Frederick Treves.

  • Sir Frederick Treves, 1st Baronet
Date:
1892
Catalogue details

Licence: Public Domain Mark

Credit: Surgical applied anatomy / by Sir Frederick Treves. Source: Wellcome Collection.

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    adhesion, it follows that the skin moves in all move- ments of that muscle. The subcutaneous tissue is, like a similar tissue in the palm, admirably constructed to resist pressure, being composed of a multitude of fibrous bands enclosing fat lobules in more or less isolated spaces. The density of the scalp is such, that in surface inflammations, such as cutaneous erysipelas, it is unable to present (except in a very slight degree) two conspicuous features of such inflammations, viz., redness and swelling. The skin is provided with a great number of sebaceous glands, which may develop into cystic tumours or wens, such cysts being more common upon the scalp than in any other part of the body. Being skin growths, these cysts, even when large, remain, except in rare instances, entirely out- side the aponeurosis, and can therefore be removed without risk of opening up the area of loose con- nective tissue between the aponeurosis and the peri- cranium. There being no fatty tissue in any of the layers that cover the bony vault, save in the subcutaneous layer, it happens that in cases of obesity the scalp undergoes but little change, the fat in the subcu- taneous tissue being limited liy the dense fibrous structures that enclose it. For the same reasons fatty tumours of the scaljj are very rare. The attachment of the hairs collectively to the scalp is so strong that there are many cases wliere the entire weight of the body has been su^Dporfced by the hair of the scal^x Agnew records the case of a woman wliose hair became entantrled in the revolvinir shaft of a machine. The hair did not give way, but the entire scalp was torn off from the skull. The jjatient recovered. I have seen a precisely similar case in a girl aged The dangerous sirca oC llic sc.alp.—Between the aponeurosis and the ])cricranium is an extensive layer of loose connective tissue, that may, for reasons