Human Anatomy: Muscle Groups |
Muscle Function & Other Pertinent Medical Information | |
- SERRATUS POSTERIOR INFERIOR - | |
ORIGIN: | Spinous processes and supraspinous ligaments of T11-L2 |
INSERTION: | Posterior aspect of ribs 9-12 |
ACTION: | Assists forced expiration |
NERVE: | Anterior primary rami (T9-12) |