Transversus Thoracis
Transversus Thoracis
☆transversus thoracis - triangularis sterni
MusclePro
Anatomy
- Origin
- Inner surface of lower portion of sternum and adjacent costal cartilages.
- Insertion
- Inner surfaces of costal cartilages of the second through sixth ribs.
- Nerve
- Intercostal nerves.
- Actions
- Draws ventral part of ribs downward, decreasing the volume of the thoracic cavity for forceful expiration.
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