Synopsis
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1914 Excerpt: ... the other and larger terminal branch of the anterior division. It descends, usually behind the internal pudic, upon the pyriformis and sacral nerves, and emerges from the pelvis through the lower compartment of the great sacrosciatic foramen, having previously pierced the parietal pelvic fascia. Within the pelvis the artery gives off branches to the pyriformis, levator ani, coccygeus, rectum, bladder, vesicula seminalis, and prostate gland. For the extrapelvic course and distribution of the vessel, see p. 407. Posterior Division.--The ilio-lumbar artery (P) passes upwards and outwards in front of the sacro-iliac articulation, between the lumbosacral cord and obturator nerve. In its course it passes behind the external iliac, or, it may be, the common iliac, vessels, and also behind the psoas magnus and iliacus. On reaching the back part of the iliac fossa, it divides into two branches, iliac and lumbar, The iliac branch, passing transversely, ramifies in the iliacus and ilium, and anastomoses with the iliac branch of the obturator and branches of the deep circumflex iliac from the external iliac. The lumbar branch ascends beneath the psoas magnus on to the quadratus lumborum, where it anastomoses with the terminal part of the deep circumflex iliac, and the last lumbar of the abdominal aorta. In its course it furnishes a spinal branch, which enters the spinal canal through the intervertebral foramen between the fifth lumbar and first sacral vertebrae, to be distributed in a manner similar to the other spinal arteries. The lateral sacral arteries (P) are usually two in number, superior and inferior. They course downwards and inwards to the front of the lateral mass of the sacrum, passing in front of the pyriformis and sacral nerves. Upon the sacrum both arte...
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