Anatomical variations (III) / by W.W. Wagstaffe and Robert W. Reid.

  • Wagstaffe, W. W. (William Warwick), 1843-1910.
Date:
[1878]
Catalogue details

Licence: Public Domain Mark

Credit: Anatomical variations (III) / by W.W. Wagstaffe and Robert W. Reid. 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.

    8/14 (page 6)
    Our experience does not lead us to the same conclusions as Professor F. E. Schultze1 as to the frequency of this muscle. In eighteen out of twenty-five cases he found some modifica- tion of it, and Macalister found it in seven out of twenty.2 The latter author says, “ this muscle is always symmetrical, and the two opposite sides usually are connected in the middle line,” but it is somewhat uncertain whether this observation may not refer to the deep form of transversus nuchte. In the case here noted it was unilateral. Muscular slips on central tendon of diaphragm. These lay on the left side of the abdominal or under surface of the central tendon, occupying a position internal and external to one another. The internal one, one and a half inch long by three quarters of an inch broad, was attached to the middle of the left leaflet, and anteriorly blended with the muscular fibres on the left side of the oesophageal opening. The external slip, 2 inches long, one and a quarter inch broad, was attached posteriorly in common with the internal one, passed forwards and inwards, and lost itself on the middle leaflet near its junction with the left one. Both bundles of fibres lay on the part of the diaphragm opposite the apex of the heart. Verv few irregularities of this kind appear to have been recorded. Merkel quotes Huber5 as having described “on a part of the inferior face of this tendon muscular fibres separate from the others,” and other slips are described extending from the central tendon to the liver, &c., but, as far as we are aware, not resembling the case here recorded. The muscular fibres did not appear to be a direct continuation with any of the normal fibres of the diaphragm, although they blended somewhat with some by the left side of the oesophageal opening. Rectus sternalis. Only one specimen of this has occurred this session, and was 1 ‘Schmidt's Jahrbuch,’ bd. cxxvii, p. 288. 2 Loc. cit., p. 4. ? From Soemmerring’s Muskellelire,’ p. 162.