table 14.2 intrinsic acting on the head

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what is the origin of the longus capitis:

base of the occiput
what is the insertion of the longus capitis:

anterior tubercles of C3 - C6 transverse processes
what is the action of the longus capitis:

flex the head (atlanto-occipital motion)
what is the origin of the longus colli:
- anterior tubercle of C1
- bodies of C1 - C3
- transverse processes of C3 - C6
what is the insertion of the longus colli:
- bodies of C5 - T3 vertebrae
- transverse processes of C3 - C5 vertebrae
what is the action of the longus colli:

cervical flexion with rotation to the opposite if unilateral
what is the origin of the obliquus capitis inferior:

lateral surface of spinous process of axis
what is the insertion of the obliquus capitis inferior:

inferior surface of the transverse process of C1 (atlas)
what is the action of the obliquus capitis inferior:

unilateral: ipsilateral rotation
what is the origin of the obliquus capitis superior:

transverse process of the atlas
what is the insertion of the obliquus capitis superior:

occipital bone
what is the action of the obliquus capitis superior:

bilateral:
unilateral:
- bilateral: extension of the head on atlas
- unilateral: ipsilateral rotation
what is the origin of the rectus capitis anterior:

base of the skull, anterior to the occipital condyle
what is the insertion of the rectus capitis anterior:

anterior surface of lateral portion of C1 (atlas)
what is the action of the rectus capitis anterior:

flex head (atlanto-occipital motion)
what is the origin of the rectus capitis lateralis:

jugular process of the occiput
what is the insertion of the rectus capitis lateralis:

transverse process of C1 (atlas)
what is the action of the rectus capitis lateralis:
- flex (atlanto-occipital motion)
- stabilize the head
what is the origin of the rectus capitis posterior major:

posterior edge of spinous process of axis
what is the insertion of the rectus capitis posterior major:

inferior nuchal line on occipital bone
what is the actions of the rectus capitis posterior major:

bilateral:
unilateral:
- bilateral: extension of head on atlas
- unilateral: ipsilateral rotation
what is the origin of the rectus capitis posterior minor:

posterior tubercle of axis
what is the insertion of the rectus capitis posterior minor:

inferior nuchal line on occipital bone (medial aspect)
what are the actions of the rectus capitis posterior minor:

bilateral:
unilateral:
- bilateral: extension of the head on atlas
- unilateral: ipsilateral rotation

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table 14.2 intrinsic acting on the head

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table 14.2 intrinsic cervical muscles acting on the head

Updated

2014-03-03T23:48:59Z

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