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Suboccipital Triangle
Muscles of the suboccipital triangle
4
Anatomy
Post-Graduate
10/12/2011

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Cards

Term
Rectus Capitis Posterior Major
Definition
  • Origin: SP of C2
  • Insertion: Lat. part of inf. nuchal line.
  • Action: Extension of head; rotation to same side.
  • Innervation: Suboccipital n. (C1)
  • Blood Supply: Vertebral and occipital aa.
Term
Rectus Capitis Posterior Minor
Definition
  • Origin: Post. tubercle of post. arch of C1.
  • Insertion: Med. part of inf. nuchal line.
  • Action: Extension of head; rotation to same side.
  • Innervation: Suboccipital n. (C1).
  • Blood Supply: Vertebral and occipital aa.
Term
Obliquus Capitis Inferior
Definition
  • Origin: SP of C2.
  • Insertion: TVP's of C1.
  • Action: Rotation of atlas and face to same side.
  • Innervation: Suboccipital n. (C1).
  • Blood Supply: Vertebral and occipital aa.
Term
Obliquus Capitis Superior
Definition
  • Origin: TVP's of C1.
  • Insertion: Occipital bone between sup. and inf. nuchal lines.
  • Action: Extension of head and lat. flexion of head and neck.
  • Innervation: Suboccipital n. (C1).
  • Blood Supply: Vertebral and occipital aa.
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