yogabook / muscles / serratus posterior inferior
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M. serratus posterior inferior
The serratus posterior inferior is an expiratory auxiliary respiratory muscle.
Origin: 11th thoracic to 3rd lumbar vertebrae
Attachment: Rib 9 to 12
Innervation: Rami anteriores of the spinal nerves Th11 – L2
Antagonists:
Movement: Auxiliary expiratory