Fig. 14. Distribution of vagus (A) and spinal accessory (B) nerves in neck.

A = pharyngeal branch, B = superior laryngeal nerve, B_E = external branch, B_I = internal branch, C = left recurrent laryngeal nerve, D = superior, middle, and inferior cardiac nerves, E = right recurrent laryngeal nerve, F = trapezius muscle, G = sternocleidomastoid muscle, H = lymph node (level V), IX = glossopharyngeal nerve, SCA = right subclavian artery, SLA = superior laryngeal artery, STA = superior thyroid artery, X = vagus nerve, X_s = superior ganglion, X_i = inferior ganglion, XI = spinal accessory nerve