Injury to which of the following nerves leads to paralysis of the posterior belly of the digastric muscle?
The posterior belly of digastric is innervated by the Facial nerve, whereas the anterior belly is innervated by the mandibular division of Trigeminal nerve. The Accessory nerve supplies the sternocleidomastoid and trapezius muscles. The Ansa cervicalis innervates the infrahyoid (or strap) muscles.
Accessory nerve
Trigeminal nerve
Ansa cervicalis
Facial nerve
Cranial Nerves