The =brachial artery= pursues the same course in the arm as that of the
horse. At the elbow it becomes the median.[180] The chief differential
features in its branches are as follows:
1. The =subscapular artery= is almost as large as the continuation of
the brachial. The =posterior circumflex artery= sends branches backward
and downward into the triceps, taking the place in part of the deep
brachial artery. The =thoracico-dorsal artery= supplies branches to the
pectoral muscles and the triceps as well as the teres major and
latissimus dorsi; it may arise directly from the brachial.