COLLATERAL ARTERIES OF THE ARM
\kəlˈatəɹə͡l ˈɑːtəɹiz ɒvðɪ ˈɑːm], \kəlˈatəɹəl ˈɑːtəɹiz ɒvðɪ ˈɑːm], \k_ə_l_ˈa_t_ə_ɹ_əl ˈɑː_t_ə_ɹ_i_z ɒ_v_ð_ɪ_ ˈɑː_m]\
Definitions of COLLATERAL ARTERIES OF THE ARM
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They are given off by the branchial, and are distinguished into, 1. The collateral-superior or external which arise from the inner part of the brachial, and extend as far as the inferior and external part of the arm. 2. The collateral-inferior or internal which arise from the brachial, near the elbow-joint, and descend towards the upper part of the fore-arm. The vessels which pass to the fingers and toes are also called collateral. Speaking generally, collateral branches are those which follow nearly the same course as the vessel whence they emanate.
By Robley Dunglison