Posterior thorax
Serratus posterior inferior
Assists depression and proprioceptive control of the lower ribs during breathing
- Origin
- Spinous processes from T11 through L2 and thoracolumbar fascia
- Insertion
- Inferior borders of ribs nine through twelve
- Primary actions
- Assists depression and proprioceptive control of the lower ribs during breathing
Educational anatomy reference only. This page does not diagnose pain, injury, or movement limitations.
From anatomy to action
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