Obliquus capitis inferior muscle

Obliquus capitis inferior muscle

The obliquus capitis inferior muscle is a small muscle located at the base of the skull. It is one of the deep muscles of the neck and plays an important role in the movement and stabilization of the head.

Anatomy

The obliquus capitis inferior muscle originates from the spinous process of the axis (C2) vertebrae. It then inserts onto the transverse process of the atlas (C1) vertebrae. The muscle is situated deep to the semispinalis capitis muscle and is covered by the splenius capitis muscle.

Function

The main function of the obliquus capitis inferior muscle is to assist in the rotation and lateral flexion of the head. It works in conjunction with other muscles of the neck to allow for smooth and controlled movements of the head.

Clinical Significance

Injuries or dysfunctions of the obliquus capitis inferior muscle can lead to various symptoms and conditions. For example, if the muscle becomes tight or spasms, it can cause pain and stiffness in the neck. Additionally, dysfunction of this muscle can contribute to headaches and restricted range of motion in the head and neck.

Related Muscles

The obliquus capitis inferior muscle is closely related to other muscles in the neck that work together to facilitate movement and stability. These muscles include:

• Splenius capitis muscle: The obliquus capitis inferior muscle is covered by the splenius capitis muscle, which helps with head extension and rotation.

• Rectus capitis posterior major muscle: This muscle is located deep to the obliquus capitis inferior muscle and assists in head extension.

• Rectus capitis posterior minor muscle: Situated between the obliquus capitis inferior and rectus capitis posterior major muscles, this muscle also aids in head extension.

See Also

• Muscles of the head and neck
• Obliquus capitis superior muscle
• Suboccipital muscles