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. 2019 May 15;19:145. doi: 10.1186/s12909-019-1591-1

Fig. 6.

Fig. 6

Incision in red indicates the location of the carotid artery (a). Thin layer of meat covering the model simulates the sternocleidomastoid muscle (b). SCM, sternocleidomastoid muscle; AS, anterior scalene muscle; MS, middle scalene muscle; CA, carotid artery; the interscalene brachial plexus is located between AS and MS muscles; 1, C5 nerve root; 2, C6 nerve root; 3, C7 nerve root