Upper Arm

Question 1

What is the upper arm?

Answer 1

Located between the shoulder joint and elbow joint

Question 2

How many muscles in the upper arm?

Answer 2

4 muscles - 3 in the anterior compartment and 1 in the posterior compartment

Question 3

Which muscles are in the anterior compartment of the upper arm?

Answer 3

Biceps brachii, brachialis and coracobrachialis

Question 4

Which muscles are located in the posterior compartment of the upper arm?

Answer 4

Triceps brachii

Question 5

Which nerve innervates all the muscles in their anterior arm?

Answer 5

Musculocutaneous nerve

Question 6

Where does the long head of the biceps brachii originate?

Answer 6

Supraglenoid tubercle

Question 7

What is the main action of biceps brachii?

Answer 7

Supination of the forearm

Question 8

What is the action of coracobrachialis?

Answer 8

Flex and adduct arm

Question 9

What is the action of triceps brachii?

Answer 9

Extension of the elbow

Question 10

Which of these muscles contributes to the cubital fossa; biceps brachii, triceps brachii, coracobrachialis or brachialis?

Answer 10

Biceps brachii

Question 11

Which nerve supplied the triceps?

Answer 11

Radial nerve