The dissector's manual of practical and surgical anatomy / By Erasmus Wilson.

  • Wilson, Erasmus, Sir, 1809-1884.
Date:
1856
Catalogue details

Licence: Public Domain Mark

Credit: The dissector's manual of practical and surgical anatomy / By Erasmus Wilson. Source: Wellcome Collection.

Provider: This material has been provided by the Harvey Cushing/John Hay Whitney Medical Library at Yale University, through the Medical Heritage Library. The original may be consulted at the Harvey Cushing/John Hay Whitney Medical Library at Yale University.

    100/594 (page 106)
    The tendinous centre of the diaphragm is shaped like a trefoil leaf, of which the central leaflet points to the ensiform cartilage, Fi.o;. 31. The Under or Abdominal Side op the Diaphragm.—1, 2, 3. The greater muscle ; the figure 1 rests upon the central leaflet of the tendinous centre ; the number 2 on the left or smallest leaflet; and number 3 on the right leaflet. 4. The thin fasciculus which arises from the ensiform cartilage ; a small triangular space is left on either side of this fasciculus, -which is closed only by the serous membrane of the abdomen and chest. 5. The ligamentum arcuatum externum of the left side. 6. The ligamentum arcuatum internum. 7. A small arched opening occasionally found, through which the lesser splanchnic nerve passes. 8. The right or larger tendon of the lesser muscle ; a muscular fasciculus from this tendon curves to the left side of the greater muscle between the cesophageal and aortic openings. 9. The fourth lumbar vertebra. 10. The left or shorter tendon of the lesser muscle. 11. The aortic opening occupied by the aorta, which is cut short ofi. 12. A portion of the oesophagus issuing through the oesophageal opening. 13. The opening for the inferior vena cava, in the ten- dinous centre of the di:i])hragm. 14. The psoas magnus muscle passing beneath the ligamentum arcuatum internum ; it has been removed on the opposite side to t^how the arch more distinctly. 15. The quadratus lumborum passing beneath the ligamentum arcuatum externum ; this muscle has also been removed on the left side. and is the largest; the lateral leaflets, right and left, occupy the corresponding ])ortions of the muscle; the right being the larger and more rounded, and the left smaller and lengthened in its form. Between the sides of the ensiform cartilage and the cartilages of the adjoining ribs, is a snmll triangular space where the mus- cular flbres of the diaphragm are deflcient. This space is closed only by peritoneum on the side of the abdomen, and by pleura