Elbow

Question 1

Biceps Brachii
-Action
-Root, trunk, cord, nerve

Answer 1

-Elbow flexion, supination
-C5-C6, upper trunk, lateral cord, musculocutaneous n.

Question 2

Brachialis
-Action
-Root, trunk, cord, nerve

Answer 2

-Elbow flexion
-C5-C6, upper trunk, lateral cord, musculocutaneous n.

Question 3

Brachioradialis
-Action
-Root, trunk, cord, nerve

Answer 3

-Elbow flexion
-C5-C6, upper trunk, posterior cord, radial n (below spiral groove)

Question 4

Pronator teres
-Action
-Root, trunk, cord, nerve

Answer 4

-Elbow flexion, pronation
-C6-C7, upper and middle trunk, lateral cord, median n

Question 5

Triceps
-Action
-Root, trunk, cord, nerve

Answer 5

-Elbow extension
-C6-C8, all three trunks, posterior cord, radial n (above spiral groove)

Question 6

Anconeus
-Action
-Root, trunk, cord, nerve

Answer 6

-Elbow extension
-C6-C8, all three trunks, posterior cord, radial n (above spiral groove)

Question 7

Supinator
-Action
-Root, trunk, cord, nerve

Answer 7

-Forearm supination
-C5-C6, upper trunk, posterior cord, radial n (PIN)

Question 8

Pronator quadratus
-Action
-Root, trunk, cord, nerve

Answer 8

-Forearm pronation
-C7-T1, middle and lower trunk, medial and lateral cords, median n (AIN