| Term | Definition |
|
Serratus ventralis |
Origin - First ten ribs. Insertion - Medial surface of scapula. Action - Draws scapula to thorax. |
|
Levator scapulae |
Origin - Last five cervical vertebrae. Insertion - medial surface of scapula. Action - Draws scapula cranioventrally. |
|
Transversus costarum |
Origin - Lateral border of sternum. Insertion - First rib. Action - Draws sternum crainially. |
|
Scalenus |
Origin - Ribs. Insertion - Cervical transverse process. Action - Flexes the neck. |
|
External intercostal |
Origin - Border of rib. Insertion - Border of adjacent rib. Action - Protracts the ribs. |
|
Internal intercostal |
Origin - Border of rib. Insertion - Border of adjacent rib. Action - Retracts the ribs. |