Masseteric nerve
Masseteric Nerve is a branch of the mandibular nerve, the third division of the trigeminal nerve, which is the fifth cranial nerve. It plays a crucial role in the innervation of the masseter muscle, a muscle of mastication.
Etymology[edit | edit source]
The term "masseteric" is derived from the Greek word "másētḗr," which means "chewer." The term "nerve" comes from the Latin word "nervus," meaning "sinew or tendon."
Anatomy[edit | edit source]
The masseteric nerve arises from the anterior division of the mandibular nerve. It passes laterally, above the lateral pterygoid muscle, and enters the deep surface of the masseter after passing through the mandibular notch. It is accompanied by the masseteric artery and vein.
Function[edit | edit source]
The masseteric nerve is responsible for providing motor innervation to the masseter muscle. This muscle is involved in the process of mastication, or chewing, by elevating the mandible against the maxilla.
Clinical Significance[edit | edit source]
Damage to the masseteric nerve can result in weakness or paralysis of the masseter muscle. This can lead to difficulties in chewing and jaw movement. Conditions such as trigeminal neuralgia can also affect the masseteric nerve, causing severe facial pain.
Related Terms[edit | edit source]
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Credits:Most images are courtesy of Wikimedia commons, and templates Wikipedia, licensed under CC BY SA or similar.Contributors: Prab R. Tumpati, MD