1864 (ed. 7) I. ii. 193 In animals without a clavicle the cleido-mastoid muscle is continued into the clavicular part of the great pectoral muscle, thus forming a mastoido-humeral muscle.
1989 74 277 The vagus nerve was..anastomosed with the peripheral end of the spinal accessory nerve, which innervates the trapezius and mastoido-humeral muscles.