trunk)形成吻合(anastomosis)。頸神經叢支配頭部後側與部分頸部的肌肉,各分支由頸部後三角(英语:Posteriortriangleoftheneck)邊界、胸鎖乳突肌中點上的頸神經點(英语:nerve point ofneck)分岔出來。 頸神經叢的分支主要分為皮支(Cutaneous branches)與肌肉支(Muscular
joined with the upper end of tragus. The antitragus is sometimes tentatively indicated, though wrongly placed. The anterior triangleoftheneck is now better