Serratus Posterior Inferior
Depresses lower ribs(IX to XII), aiding in expiration. Located in the torso.
- Actions
- depresses lower ribs(IX to XII), aiding in expiration
- Origin
- vertebrae T11 – L3
- Insertion
- inferior borders of 9th through 12th ribs
- Innervation
- intercostal nerves
- Blood supply
- intercostal arteries