Volume 1

On the anatomy, physiology, and pathology of the chimpanzee / by Charles F. Sonntag.

  • Sonntag, Charles F. (Charles Frederick), -1925
Date:
1923
Catalogue details

Licence: In copyright

Credit: On the anatomy, physiology, and pathology of the chimpanzee / by Charles F. Sonntag. Source: Wellcome Collection.

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    formed by the superficialis volt© and a branch of the ulnar artery; (3) a digital arch (Dig.A) over tdie metacarpo-phalangeal joints of the index and medius is formed by a branch of the ulnar artery with the continuation of the radial artery. The deep and digital arches are connected by a thick vessel. The wrist joint is supplied by dorsal branches of the radial and ulnar arteries, the anterior radial carpal artery, the anterior interosseous artery, and the deep palmar arch. There is no anastomosis round the elbow joint. The arrangements of the arteries in the pectoral extremity favour a relatively slower circulation than in Man. The pro- funda arteries break up into a much larger number of branches, and the brachial artery terminates in a large number of vessels which run distally in long, parallel trunks. Consequently the frictional resistance resulting from more numerous branches, combined with the relatively smaller and more uniform brachial artery slow the circulation much more. The addition of a third, or digital, arterial arch is an additional factor. As there are no anastomoses round the joints and scapula, the connections must be more numerous in the muscles, which will consequently play an important part in maintaining the circulation. And finally, the vascular arrangements are such that the head, neck, and arm get a relatively greater supply of blood than do the thorax, abdomen, and legs. Arteries of the Pelvic Extremity• The femoral artery begins about the middle of Poupart’s ligament and courses downwards for an inch and a half. Then it gives off the profunda and is continued as the superficial femoral artery. The latter passes between the two parts of the adductor magnus and becomes the popliteal artery. There is no adductor canal. The common femoral artery gives off' a trunk which divides into an abdominal artery and the mesial circum- flex artery; and the former, after giving a nutrient artery to the ilium and the deep epigastric, is continued as the obturator artery. From the common femoral artery the deep circumflex iliac artery also arises. The profunda gives off* the lateral femoral circumflex artery, and the superficial femoral artery gives off* the saphenous artery, which goes down to the foot. The deep epigastric artery runs up in the sheath of the rectus, but does not anastomose with a superficial epigastric branch of the internal mammary artery. The obturator artery passes through the obturator foramen after running down over the horizontal ramus and back of the pubis. It supplies the symphysis pubis and muscles attached to the bone around the foramen. The mesial femoral circumflex artery runs down over the head of the femur under the adductor muscles, and supplies the capsule of the hip joint, psoas, obturator interims, and adductor Pkoc. Zool. Soc.—1923, No XXYI. 26 [67]
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