posterior arm

Question 1

Triceps brachii Long head

Answer 1

Infragelnoid tubercle
Olecranon process Glenohumeral, elbow Glenohumeral and elbow extension
Radial nerve

Question 2

Triceps brachii Lateral head

Answer 2

Radial nerve
Post humerus above radial groove
Olecranon process
Elbow extension

Question 3

Triceps brachii medial head

Answer 3

Radial nerve
Post humerus below radial groove
Olecranon process
Elbow extension

Question 4

Anconeous

Answer 4

lateral epicondyle of humerous
olecranon process
elbow extension
radial nerve