The facial branch of the external carotid artery ascends beneath the submaxillary gland (see neck anatomy and submaxillary gland resection) and crosses the mid-body of the mandible beneath the marginal mandibular branch of the facial nerve. The superficial temporal is a terminal branch of the external carotid arising within the parotid gland. It crosses the posterior end of the zygomatic process and lies deep to the temporal branch of the facial nerve. The surgeons elected to use the superficial temporal vessels in this case.
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