Posterior Arm Myology

Question 1

Triceps brachii m.

Answer 1

I: Olecranon and fascia of forearm
A: Extend elbow
N: Radial n.
Blood Supply: Branches of deep brachial artery.

Question 2

Anconeus m.

Answer 2

I: Lateral olecranon
A: Extend forearm, stabilize elbow joint
N: Radial nerve
Blood Supply: Medial collateral branch of deep brachial a.