Rectus capitis anterior muscle

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Rectus capitis anterior muscle
Rectus capitis anterior muscle.PNG
The anterior vertebral muscles. Rectus capitis anterior muscle labeled in purple
Latin Musculus rectus capitis anterior
Gray's subject #113 395
Origin atlas
Insertion    Occipital bone
Artery Ascending artery
Nerve Ventral primary rami of spinal nerves C1-2
Actions Flexion of neck at atlanto-occipital joint

The rectus capitis anterior (rectus capitis anticus minor) is a short, flat muscle, situated immediately behind the upper part of the Longus capitis.

It arises from the anterior surface of the lateral mass of the atlas, and from the root of its transverse process, and passing obliquely upward and medialward, is inserted into the inferior surface of the basilar part of the occipital bone immediately in front of the foramen magnum.


action: aids in flexion of the head and the neck; nerve supply: C1, C2. 1

Additional images

  • Occipital bone. Outer surface.

  • Base of skull. Inferior surface.

References

  1. ^ http://www.wheelessonline.com/ortho/rectus_capitis_anterior

This article incorporates text from a public domain edition of Gray's Anatomy.

External links

Cervical

CN VII (superficial, PC): platysma
CN XI (deep): sternocleidomastoid

C1–C6 (anterior): Prevertebral muscles: longus (capitis, colli)

C3–C8 (lateral): scalene (anterior, medius, posterior)
Suboccipital

C1: rectus capitis posterior (major, minor) · obliquus capitis (inferior, superior)

C1–C6 (anterior): Prevertebral muscles: rectus capitis (anterior, lateralis)
Suprahyoid
Infrahyoid/strap
Fasciae
Pharynx
Larynx

M: MUS, DF+DRCT

anat (h/n, u, t/d, a/p, l)/phys/devp/hist

noco (m, s, c)/cong (d)/tumr, sysi/epon, injr

proc, drug (M1A/3)
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