Columnae adiposae, a newly-described structure of the cutis vera : with its pathological significance in carbuncle and other affections / by J. Collins Warren.

Warren, John Collins, 1842-1927.

Date:: 1881

Credit: Columnae adiposae, a newly-described structure of the cutis vera : with its pathological significance in carbuncle and other affections / by J. Collins Warren. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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$is nearly parallel to that of the erector pili muscle {h). At about the middle of this axis are given off two hor- izontal prolongations, usually partially filled with fat tissue, appearing like a pair of extended arms or the remaining branches of a leafless trunk (jo). Near this point is sus]3ended the coil of a sweat gland (e), held in place by a few delicate fibres which find their insertion at the top of the canal or cleft. The duct of the gland runs to the top of this space, whence it may be traced to the side of the hair follicle, where it finds its way to the surface. (In dogs the sweat duct opens directly into the follicle a short distance from its mouth.) The fibres of the cutis appear, in vertical sections, to terminate abruptly at its edges. There does not appear to be any structure resembling a “ lim- iting membrane.” At its base there is sometimes a slight widening of the cleft, and on the side towards which its axis leans the fibres of the cutis collect to form a bundle which penetrates the subcutaneous fat. {^Cones Jibreux de la peau, k.) The upper extremity is rounded off in somewhat dome shape. In lean sub- jects the fat may be entirely absent. The cleft is then seen occupied by a blood-vessel in its axis and at its top by a sweat gland, the lateral space being filled by a loose reticulum of very fine fibres and connective- tissue cells. The erector pili muscle, taking its origin from the papillary layer of the cutis, is inserted partly into the base of the follicle, which its fibres embrace, and partly into the structures forming the apex of the fat canal. In some sections the fibres seem to penetrate this space, but probably surround it, although some fibres may be attached to those delicate bauds of fibrous tissue which$