Arm and cubital fosa

Question 1

Biceps brachii: long head

Answer 1

Origin-supraglenoid tubercle
Insertion-Radial tuberosity; forearm fascia
Innervation-Musculocutaneous
Action-flexion of the forearm at the elbow and supination

Question 2

Biceps brachii: short head

Answer 2

Origin-Coracoid process
Insertion-Radial tuberosity;
Innervation-Musculocutaneous nerve
Action-Flexion of the forearm at the elbow and supination

Question 3

Coracobrachialis

Answer 3

Origin-Coracoid process
Insertion-Middle 1/3 of medial humerus
Innervation-Musculocutaneous nerve
Action-Flexion and adduction of the arm at the shoulder joint

Question 4

Brachialis

Answer 4

Origin-Distal 1/2 of anterior humerus
Insertion-Coronoid process of ulna
Innervation-Musculocutaneous nerve
Action-Flexion of the forearm at the elbow

Question 5

Triceps brachii: Long head

Answer 5

Origin-Posterior surface of humerus, superior to radial groove
Insertion-Olecranon process
Innervation-Radial nerve
Action-Extension of forearm at elbow

Question 6

Triceps brachii: Lateral head

Answer 6

Origin-Posterior surface of humerus, superior to radial groove
Insertion-Olecranon process
Innervation-Radial nerve
Action-Extension of forearm at elbow

Question 7

Triceps brachii: Medial head

Answer 7

Origin-Posterior surface of humerus, inferior to radial groove
Insertion-Olecranon process
Innervation-Radial nerve
Action-Extension of forearm at elbow