Anterior Arm

Question 1

Coracobrachialis

Answer 1

Origin: coracoid process

Insertion: middle 1/3 of medial surface of humerus

Innervation: musculocutaneous nerve

Blood Supply: brachial artery

Action: flexes arm and adducts arm

Question 2

Biceps Brachii

Answer 2

Origin: long head - supraglenoid tubercle of scapula, short head - coracoid process

Insertion: radial tuberosity of radius and bicipital aponeurosis

Innervation: Musculocutaneous nerve

Blood Supply: brachial artery

Action: flexes forearm at elbow and supinates forearm at elbow

Question 3

Brachialis

Answer 3

Origin: distal 1/2 of anterior surface of humerus

Insertion: coronoid process and tuberosity of ulna

Innervation: musculocutaneous nerve and radial nerve

Blood Supply: brachial artery and radial recurrent artery

Action: flexes forearm at elbow