Posterior Shoulder

Question 1

Triceps Brachii Long Head (origin)

Answer 1

infraglenoid tubercle of scapula

Question 2

Triceps Brachii Long Head (insertion)

Answer 2

proximal end of olecranon

Question 3

Triceps Brachii Long Head (action)

Answer 3

extension of forearm; extension of shoulder

Question 4

Triceps Brachii Long Head (innervation)

Answer 4

radial nerve

Question 5

Triceps Brachii Lateral Head (origin)

Answer 5

posterior surface of humerus above and lateral to groove of radial nerve

Question 6

Triceps Brachii Lateral Head (insertion)

Answer 6

proximal end of olecranon

Question 7

Triceps Brachii Lateral Head (action)

Answer 7

extension of forearm

Question 8

Triceps Brachii Lateral Head (innervation)

Answer 8

radial nerve

Question 9

Triceps Brachii Medial Head (origin)

Answer 9

posterior surface of humerus below and medial to groove of radial nerve

Question 10

Triceps Brachii Medial Head (insertion)

Answer 10

proximal end of olecranon

Question 11

Triceps Brachii Medial Head (action)

Answer 11

extension of forearm

Question 12

Triceps Brachii Medial Head (innervation)

Answer 12

radial nerve

Question 13

Teres major (origin)

Answer 13

subscapular fossa of scapula

Question 14

Teres major (insertion)

Answer 14

medial lip of intertubercular groove

Question 15

Teres major (action)

Answer 15

adduction, medial rotation, and extension or arm

Question 16

Teres major (innervation)

Answer 16

lower subscapular nerve