Posterior Arm Muscles

Question 1

origin of triceps - long head

Answer 1

scapula (infraglenoid tubercle)

Question 2

origin of triceps - lateral head

Answer 2

posterior humerus, superior to radial groove

Question 3

origins of triceps - medial head

Answer 3

posterior humerus, inferior to radial groove

Question 4

insertion of triceps (long, lateral, and medial heads)

Answer 4

olecranon of ulna

Question 5

innervation of triceps (long, lateral, and medial heads)

Answer 5

radial nerve

Question 6

action of triceps (lateral and medial heads)

Answer 6

extension of elbow