anterior compartment of arm (flexors)

Question 1

coracobrachialis

Answer 1

• origin: coracoid process of scapula
• insertion: medial border of humerus shaft
• action: flexes and adducts the arm at shoulder

Question 2

brachialis

Answer 2

• origin: distal half of anterior humerus
• insertion: tuberosity of the ulna
• action: flexes the forearm at elbow

Question 3

biceps brachii

Answer 3

• origin: short head: tip of the coracoid process of the scapula; long head: supraglenoid tubercle of the scapula
• insertion: tuberosity of the radius
• action: flexes the forearm, supinates