Rectus capitis posterior muscle
Rectus Capitis Posterior Muscle
The Rectus Capitis Posterior Muscle is a set of two small muscles located in the human neck. These muscles are part of the suboccipital muscles group and are named for their position and function: 'rectus' meaning straight, 'capitis' referring to the head, and 'posterior' indicating their location at the back of the neck.
Structure[edit | edit source]
The Rectus Capitis Posterior Muscle is divided into two parts: the Rectus Capitis Posterior Major and the Rectus Capitis Posterior Minor.
Rectus Capitis Posterior Major[edit | edit source]
The Rectus Capitis Posterior Major originates from the spinous process of the axis, and inserts into the lateral part of the inferior nuchal line of the occipital bone.
Rectus Capitis Posterior Minor[edit | edit source]
The Rectus Capitis Posterior Minor originates from the posterior tubercle of the atlas, and inserts into the medial part of the inferior nuchal line of the occipital bone.
Function[edit | edit source]
The Rectus Capitis Posterior Muscles are responsible for head movements. They enable the head to rotate and extend. These muscles also play a role in maintaining posture and balance.
Clinical Significance[edit | edit source]
Abnormalities or injuries to the Rectus Capitis Posterior Muscles can lead to conditions such as torticollis, a condition characterized by an abnormal, asymmetrical head or neck position.
See Also[edit | edit source]
References[edit | edit source]
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Contributors: Prab R. Tumpati, MD