Question:

Answer: Prime Mover

Action - pulls limb dorsally & posteriorly

Origin - Vertebrae

Insertion - Scapula

Antagonists - Pectoris Major

Synergists - Supraspinatus

Question:

Answer: Action - stabilizes scapula

Origin - vertebrae

Insertion - scapula

Antagonists - Serratus

Synergists - Trapezius

Question:

Answer: Action - Stabilizes, raises, retracts and rotates the scapula

Origin - occipital bone

Insertion - acromion and spine of the scapula

Antagonists - sternocleidomastoid

Synergists - Splenius capitus

Question:

Answer: Action - extends, rotates, and adducts humerus

Origin - scapula

Insertion - humerus

Antagonists - Deltoid; supraspinatus

Synergists - infraspinatus

Question:

Answer: Action - Rotates humerus laterally

Origin - Scapula

Insertion - humerus

Antagonists - pectoralis major

Synergists - deltoid