serratus posterior superior
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Origin
- spinous processes of C6 & C7 & T1 & T2
Insertion
lateral side of angles of 2nd to 5th ribs
Action
draws lower ribs backward & downward
Innervation
1st & 4th intercostal nerves
More general terms
References
- ↑ Stedman's Medical Dictionary 26th ed, Williams & Wilkins, Baltimore, 1995