auricular nerve


Also found in: Dictionary, Thesaurus, Encyclopedia.
Related to auricular nerve: auriculotemporal nerve

auricular nerve

Any of three nerves, the great auricular nerve, the posterior auricular nerve, or the auricular branch of the vagus nerve (CN X). The great auricular nerve is a sensory branch of the cervical plexus composed of axons from spinal cord segments C2–C3; it innervates the skin and fascia behind the ear, on the lower part of the pinna of the ear, and over the angle of the jaw. The posterior auricular nerve is a motor branch of the facial nerve (CN VII) that innervates the posterior and intrinsic auricular muscles. The auricular branch of the vagus nerve is a sensory nerve emerging from the superior ganglion of the vagus nerve, joined by branches from the glossopharyngeal (CN IX) and facial nerves, and innervating the lower part of the tympanic membrane and the floor of the external auditory canal.
See also: nerve
References in periodicals archive ?
Efcacy of greater auricular nerve inltration anesthesia in patients having less than optimal analgesia after conventional inferior alveolar nerve block for surgical extraction of mandibular third molar.
Fine needle aspiration cytology smears of greater auricular nerve: (a) and (b) showing multiple epithelioid cell granulomas admixed with mature lymphocytes (Hematoxylin and eosin stain, 400x) (c) Multinucleated giant cells (Hematoxylin and eosin stain, 400x) (d) Lepra bacilli (arrow) stained positive (Modified Ziehl-Neelsen, Oil immersion).
The site was corresponding to the route of Greater Auricular Nerve in the neck.
During parotidectomy, the great auricular nerve, located near the posterior border of the sternocleidomastoid muscle and anterior to the mastoid tip, is often sacrificed at the parotid inferior pole.
In the 8- to 14-mm period, the posterior auricular nerve appears near the chorda tympani.
Greater auricular nerve abscess in borderline tuberculoid leprosy masquerading as jugular vein thrombosis.
Great auricular nerve involvement in leprosy: scope for misdiagnosis.
All patients were studied with EMG; the amplitude and speed of sensitivity and motor nerve conduction of the more frequently affected nerves in PNL was tested, except for the auricular nerve. The EMG was performed using the Cadwell Sierra Wave equipment, following standardised protocols.
On clinical examination he had madarosis and thickened ulnar, radial and greater auricular nerves. All peripheral pulses were well felt.
* Injury to important structures and nerves: all blood vessels and nerves located between the mandible and the sternoleidomastoid muscle are vulnerable to injury, specifically the mandibular branch of the facial nerve, the spinal branch of the accessory nerve and the greater auricular nerves.
1: ulnar nerve thickness; 2: ulnar and fibular nerves thickness; 3: ulnar and posterior auricular nerves thickness Table 2.