Auriculotemporal nerve

Auriculotemporal Nerve

Auriculotemporal nerve as seen in Gray's Anatomy

The Auriculotemporal Nerve is a branch of the Mandibular Nerve, the third division of the Trigeminal Nerve, which is the fifth cranial nerve. It provides sensory innervation to various regions on the side of the head.

Anatomy

The Auriculotemporal Nerve arises by two roots from the posterior division of the Mandibular Nerve. These two roots encircle the Middle Meningeal Artery. The nerve then gives off several branches to the Parotid Gland, external acoustic meatus, and the upper part of the auricle.

Function

The Auriculotemporal Nerve carries sensory information from the skin of the temple and the auricle, as well as from the temporomandibular joint. It also carries parasympathetic fibers to the parotid gland, contributing to salivation.

Clinical Significance

Damage to the Auriculotemporal Nerve can result in a loss of sensation in the areas it innervates. It can also lead to Frey's Syndrome, a condition characterized by sweating and flushing of the facial skin when salivating.

See Also

• Trigeminal Nerve
• Mandibular Nerve
• Frey's Syndrome

References

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