. The anatomy of the human body. Human anatomy; Anatomy. THE ULNAR ARTERY. 649 Fig. at the point where the vessel becomes vertical, and accompanies it as far as the hand. The median nerve is situated on its inner side at the bend of the elbow, but afterward becomes anterior, and then external to it. In some cases of high division of the humeral artery, the ulnar has been found immediately under the fascia in its whole length. In the hand, it is at first situated on the outer or radial side of the pisiform bone, and then in front of the hook-like process of the unci- form bone ; finally,
. The anatomy of the human body. Human anatomy; Anatomy. THE ULNAR ARTERY. 649 Fig. at the point where the vessel becomes vertical, and accompanies it as far as the hand. The median nerve is situated on its inner side at the bend of the elbow, but afterward becomes anterior, and then external to it. In some cases of high division of the humeral artery, the ulnar has been found immediately under the fascia in its whole length. In the hand, it is at first situated on the outer or radial side of the pisiform bone, and then in front of the hook-like process of the unci- form bone ; finally, where it forms the superficial palmar arch, it is entirely sub-aponeurctic. In the forearm, the ulnar artery gives off a great number of un- named collateral branches, which are divided into internal, external, anterior, and posterior, and are distributed to the muscles and integ- uments. Four branches, however, require special notice, viz., in the forearm, the common trunk of the ulnar recurrents, the interosseous artery, the branch for the median nerve, and the anterior artery of the carpus; in the palm of the hand, the ulnar artery gives off the collat-^ eral arteries of the fingers. The anterior and posterior ulnar recurrent arteries generally arise by a common trunk, which is given off from the back of the highest portion of the ulnar artery, passes transversely inward, and divides into two branches—an anterior and a posterior. The former, or an- terior ulnar recurrent artery {e,fig. 211), passes between the brachialis anticus and pronator teres, gives branches to all the muscles attach- ed to the inner condyle, and anastomoses with the internal collateral branch from the brachial. The other branch, the posterior ulnar re- current, is larger than the anterior, runs behind the muscles arising from the inner condyle, is then situated between that condyle and the olecranon, passes between the two origins of the flexor carpi ulnaris in front of the ulnar nerve, anastomoses f
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