Muscle Set #2 Quiz #3

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The action of this muscle is to elevate the ribs through contraction and depress the ribs through relaxation.

The innervation of this muscle are the thoracic spinal nerves T2-T12.

The action of this muscle is to abduct the scapula and rotate it upwards.

The origin of this muscle is the inferior border of the rib above.

The insertion of this muscle is the body of the hyoid bone.

The origin of this muscle is the medial end of the clavicle and manubrium of the sternum

The innervation of this muscle is the long thoracic nerve.

The innervation of this muscle are the branches of the spinal nerves C1-C3