Intermediate nerve

Intermediate nerve

The Intermediate nerve, also known as the nervus intermedius, is a part of the facial nerve located between the motor component of the facial nerve and the vestibulocochlear nerve. It is responsible for carrying both sensory and parasympathetic fibers.

Etymology

The term "intermediate nerve" is derived from its location, as it is situated between the facial and vestibulocochlear nerves. The Latin term "nervus intermedius" is a direct translation of this.

Anatomy

The intermediate nerve is a part of the facial nerve (cranial nerve VII), which is one of the twelve cranial nerves. It is located between the motor component of the facial nerve and the vestibulocochlear nerve (cranial nerve VIII). The intermediate nerve carries both sensory and parasympathetic fibers.

Function

The intermediate nerve carries sensory fibers for taste from the anterior two-thirds of the tongue via the chorda tympani. It also carries parasympathetic fibers to the submandibular gland and sublingual gland, which are salivary glands, as well as to the lacrimal gland, which produces tears.

Clinical significance

Damage to the intermediate nerve can result in a loss of taste sensation in the anterior two-thirds of the tongue and a decrease in salivation and tear production. This can occur due to a variety of causes, including Bell's palsy, stroke, and neurosurgery.

See also

• Facial nerve
• Vestibulocochlear nerve
• Cranial nerves
• Chorda tympani
• Submandibular gland
• Sublingual gland
• Lacrimal gland

Intermediate nerve Resources
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