Posterior Arm

Question 1

Triceps Brachii: O

Long/lateral/medial Head

Answer 1

• Infraglenoid Tubercle of Scapula (Long Head)
• Posterior surface of Humerus superior to Radial Groove (Lateral Head)
• Posterior surface of Humerus inferior to Radial Groove (Medial Head)

Question 2

Triceps Brachii: I

Long/lateral/medial Head

Answer 2

Olecranon process

Question 3

Triceps Brachii: N

Long/lateral/medial Head

Answer 3

Radial Nerve C6-8

Question 4

Triceps Brachii: A

Long/lateral/medial Head

Answer 4

• Extends Arm

- Steadies Head of abducted Humerus (Long head)

Question 5

Anconeus: O

Answer 5

Lateral Epicondyle of Humerus

Question 6

Anconeus: I

Answer 6

Lateral aspect of Olecranon and posterior superior aspect of Ulna

Question 7

Anconeus: N

Answer 7

Radial nerve

C7-8 T1)

Question 8

Anconeus: A

Answer 8

• Assists Triceps in Extending Forearm
• Stabilizes Elbow joint
• Abducts Ulna during pronation – the only muscle to do this