Rectus capitis anterior muscle
Encyclopedia
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.
origin: anterior surface of the lateral mass of the atlas and the root of its transverse process;
insertion: the inferior surface of the occipital bone anterior to the foreamen magnum;
action: aids in flexion of the head and the neck;
nerve supply: C1, C2.
It arises from the anterior surface of the lateral mass
Lateral mass
Lateral mass can refer to:* Labyrinth of ethmoid* Lateral mass of atlas...
of the atlas
Atlas (anatomy)
In anatomy, the atlas is the most superior cervical vertebra of the spine.It is named for the Atlas of Greek mythology, because it supports the globe of the head....
, 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
Occipital bone
The occipital bone, a saucer-shaped membrane bone situated at the back and lower part of the cranium, is trapezoidal in shape and curved on itself...
immediately in front of the foramen magnum.
origin: anterior surface of the lateral mass of the atlas and the root of its transverse process;
insertion: the inferior surface of the occipital bone anterior to the foreamen magnum;
action: aids in flexion of the head and the neck;
nerve supply: C1, C2.