Muscle Function & Other Pertinent Medical Information
- DIAPHRAGM
-
ORIGIN:
Vertebral:crura from bodies of L1, 2 (left), L1-3 (right). Costal: medial and lateral arcuate ligs, inner aspect of lower six ribs . Sternal: two slips from posterior aspect of xiphoid
INSERTION:
Central tendon
ACTION:
Inspiration and assists in raising intra-abdominal pressure
NERVE:
Phrenic nerve (motor) (C3, 4, 5). Sensory: phrenic, intercostals (6-12) and upper two lumbar nerve roots
