Manual of general, descriptive, and pathological anatomy (Volume 3).

  • Meckel, J. F. (Johann Friedrich), 1781-1833.
Date:
1832
Catalogue details

Licence: Public Domain Mark

Credit: Manual of general, descriptive, and pathological anatomy (Volume 3). Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)

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    tributed in the skin to the middle of the internal face of the thigh, and anastomoses with some filaments nfthA brutal nerve. Besides there arise from the first lumbar nerve and its anastomosis with the second, branches designed for the psoas, the quadratus lum- borum, and'the transversalis abdominis muscles, and for the integuments of the lumbar and inguinal regions. One of these branches, which is large, penetrates the psoas muscle, goes forward between the obliquus internus and transversalis along the crest of the ilium, and terminates in the inferior part of the large abdominal muscles and skin of this region and of the scrotum. Several filaments come from the second lumbar nerve and are distributed to the psoas and quadratus lumborum muscles and the skin of the lumbar and inguinal regions: usually there arise one or two distinct branches which are longer (nerfi lio-scrotal, Ch.), which passing through the psoas muscle, proceed outwardly before the quadratus lumborum, penetrate the transversalis, then the obliquus internus, to which they give filaments, go forward along the crest of the ilium, perforate the aponeurosis of the obliquus externus, and are distributed to the skin of the inguinal region and scrotum. 3d. The third lumbar nerve usually gives off a cutaneous nerve which unites to the preceding one or replaces it either partially or wholly, descends between the psoas and iliacus muscles, emerges from the pelvis, passing under the outward extremity of the crural arch and is distributed to the external and anterior extremities of the integuments of the thigh to the neighborhood of the knee. There it is the infe- rior branch of the crural plexus of Bichat, the inguino-cutant of Chaussier. 4th. The fourth lumbar nerve usually gives branches only to the iliacus muscle. 5th. The anterior branches of the fourth and fifth lumbar nerve unite to form a very considerable trunk, the lombo-sacral nerve of Bichat (JV. lumbo-sacralis), which is much larger than the crural, and give origin in the very cavity of the small pelvis, but always before uniting with the first sacral nerve, to the superior gluteal nerve (JV. glutceus superior), which emerges from the pelvis below the upper edge of the sciatic notch, is distributed to the gluteus medius and minimus, and penetrates even forward to the tensor vaginae femoris. 6th. From the second and third sacral nerve, come some fasciculi which unite then give filaments to the pyramidalis muscle, and coming from the pelvis below it, go to form the inferior gluteal nerve Before these fasciculi, a very considerable nerve arises from these same nerves farther below and forward, sometimes also from the fourth sacral nerve, called the external common hemorrhoidal nerve (JV. ««- dendo-hczmorrhoidahs communis externus), which re-enters into the pelvis between the two sacro-sciatic ligaments, and divides into two branches, the external pudtc, and the inferior hemorrhoidal nerve The external or superior pudic nerve, ischio-p&rien or ischdo-clitori dim, Oh. (N.pudendus externus, s. superior), goes along the ascending