Deep temporal nerve

Deep Temporal Nerve

Deep temporal nerves, as illustrated in Gray's Anatomy.

The Deep Temporal Nerve is a branch of the mandibular nerve, the third division of the trigeminal nerve, which is responsible for providing sensory innervation to the temporalis muscle.

Anatomy

The deep temporal nerves are typically two in number, anterior and posterior. They ascend between the temporalis and the pericranium. They supply the temporalis with motor fibers, and communicate with the middle temporal artery.

Function

The deep temporal nerves carry motor fibers to the temporalis muscle, a large muscle which is involved in mastication. The temporalis muscle is responsible for closing the jaw and pulling the jaw backwards.

Clinical Significance

Damage to the deep temporal nerves can result in weakness or paralysis of the temporalis muscle, leading to difficulties in mastication. This can occur due to trauma, surgical complications, or diseases such as Bell's palsy.

See Also

• Mandibular nerve
• Trigeminal nerve
• Temporalis muscle