Mastoid process

Mastoid Process

The Mastoid Process is a conical prominence projecting from the undersurface of the mastoid portion of the temporal bone. It is located just behind the external ear. The mastoid process provides a surface for the attachment of several muscles that assist in moving the head.

Anatomy

The mastoid process is filled with air cells that communicate with the middle ear, known as the mastoid cells. These cells are susceptible to infection, which can lead to a condition known as mastoiditis. The mastoid process is also the site of insertion for the sternocleidomastoid muscle, which is responsible for rotating the head.

Clinical Significance

The mastoid process can be easily palpated, which makes it a useful landmark in medical examinations. Infections in the mastoid process can lead to serious complications, including hearing loss and meningitis. Therefore, early detection and treatment of mastoiditis is crucial.

See Also

• Temporal bone
• Mastoiditis
• Middle ear
• Sternocleidomastoid muscle

References

Mastoid process Resources
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