An introduction to pathology and morbid anatomy / by T. Henry Green.

  • Green, T. Henry (Thomas Henry), 1841-1923
Date:
1900
Catalogue details

Licence: In copyright

Credit: An introduction to pathology and morbid anatomy / by T. Henry Green. Source: Wellcome Collection.

Provider: This material has been provided by The University of Leeds Library. The original may be consulted at The University of Leeds Library.

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    demarcation) surrounding the edges and base of the slough; fibres and all firm connections between the living and dead tissues are softened and eaten through ; and, finally, when this process is complete, the slough is cast oft by suppuration occurring along the line of demarca- tion. If the whole thickness of a limb die, the stump left by casting off the sphacelus will be conical; for the soft parts retract somewhat, and the bone separates lower down. The less vascular a tissue, the longer will be the time occupied in the separation—e.g., fascia, tendon. b a a b d b a c Fig. 6. —A- necrosed patch in the Myocardium. At (d) where the muscle-fibres have disappeared, the structure consists of the connective-tissue stroma, and the ddbris of necrosed muscle-fibres. At other places engorged blood-vessels and e,\-travasated blood [h, c) are seen. The muscle-fibres remaining [a] have lost their striation. x 150. bone. If the dead mass be deeply seated, and suppuration occur about it, fistulse will form, leading from it to the surface. Through one or more of these, it may ultimately be cast oft, as in necrosis of bone. After removal of the slough, an ulcerated surface is left. Senile Gangrene. This is a form of necrosis which aS'ects especially the lower ex- tremities of old people, and is the result of several of those ajtiological conditions which have already been enumerated. u