Muscles that move the Forearm

Biceps Brachii — Two heads — Flex at elbow + supination of forearm

Lateral Long heads : supraglenoid tubercle

Medial Short head: Coracoid Process

Brachialis — elbow flexion

Brachioradialis — elbow flextion / bends forearm upward + supination and pronation

Triceps brachii — elbow extension + shoulder extension and adduction

Long head: infraglenoid tubercle

Lateral head : posterior surface of the humerus

Medial Head: posterior surface of the humerus Inferior the radial groove

Supination

rotation that turns your palm to face upward or forward (as if holding a bowl of soup)

Pronation

the rotational movement that turns your palm to face backward or downward