Triceps Brachii

Question 1

Triceps Brachii (ORIGIN)

Answer 1

Long Head: Infraglenoid tubercle of the scapula
Lateral Head: Posterior surface of the humerus, superior to the radial groove
Medial Head: Posterior surface of the humerus, inferior to the radial groove

Question 2

Triceps Brachii (INSERTION)

Answer 2

Olecranon of the ulna

Question 3

Triceps Brachii (INNERVATION)

Answer 3

Radial nerve (C6, C7, C8)

Question 4

Triceps Brachii (BLOOD SUPPLY)

Answer 4

Deep brachial artery (profunda brachii)

Question 5

Triceps Brachii (ACTION)

Answer 5

Extends the elbow; the long head also extends and adducts the arm