INTERCOSTAL ARTERIES
\ˌɪntəkˈɒstə͡l ˈɑːtəɹiz], \ˌɪntəkˈɒstəl ˈɑːtəɹiz], \ˌɪ_n_t_ə_k_ˈɒ_s_t_əl ˈɑː_t_ə_ɹ_i_z]\
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vary in number. There is constantly, however, a superior, Arteria, which is given off from the posterior part of the subclavian, and which sends branches into the first two or three intercostal spaces; and, generally, eight or nine inferior or aortic intercostals. These arise from the lateral and posterior parts of the pectoral aorta, and ascend obliquely in front of the vertebral column, to gain the intercostal spaces, where they divide into a dorsal branch and an intercostal, properly so called.
By Robley Dunglison
