Middle meningeal nerve
Middle Meningeal Nerve
The Middle Meningeal Nerve is a branch of the Mandibular Nerve, which is the third division of the Trigeminal Nerve. It is a small nerve that plays a significant role in the innervation of the meninges and parts of the calvaria.
Etymology[edit | edit source]
The term "Middle Meningeal Nerve" is derived from its location and function. "Meningeal" refers to the meninges, the protective layers of the brain and spinal cord, and "middle" indicates its position relative to other meningeal nerves.
Anatomy[edit | edit source]
The Middle Meningeal Nerve arises from the Mandibular Nerve just before it enters the foramen ovale. It then ascends with the Middle Meningeal Artery through the foramen spinosum to reach the cranial cavity. Here, it divides into anterior and posterior branches, which supply the dura mater and parts of the calvaria.
Function[edit | edit source]
The primary function of the Middle Meningeal Nerve is to provide sensory innervation to the meninges and parts of the calvaria. This includes the transmission of pain signals, which is why irritation or inflammation of the meninges (as in meningitis) can lead to severe headaches.
Clinical Significance[edit | edit source]
Due to its role in transmitting pain signals from the meninges, the Middle Meningeal Nerve is of clinical significance in conditions such as meningitis and subdural hematoma. In these conditions, irritation or damage to the meninges can lead to severe pain, which is transmitted via the Middle Meningeal Nerve.
Related Terms[edit | edit source]
- Meninges
- Mandibular Nerve
- Trigeminal Nerve
- Middle Meningeal Artery
- Foramen Ovale
- Foramen Spinosum
- Cranial Cavity
- Dura Mater
- Calvaria
- Meningitis
- Subdural Hematoma
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Contributors: Prab R. Tumpati, MD
