Anatomy and Function of the Posterior Compartment of the Forearm Quiz

Test your knowledge on the muscles, nerves, and blood supply of the posterior forearm compartment. Take the quiz now!

#1

Which artery supplies blood to the muscles in the posterior compartment of the forearm?

Radial artery
Ulnar artery
Brachial artery
Anterior interosseous artery
2 answered
#2

Which ligament runs across the ulnar notch of the radius and is important for stabilizing the distal radioulnar joint?

Ulnar collateral ligament
Annular ligament
Radial collateral ligament
Interosseous membrane
2 answered
#3

Which muscle in the posterior compartment of the forearm has its origin on the lateral epicondyle of the humerus?

Extensor carpi ulnaris
Extensor digitorum
Brachialis
Anconeus
#4

Which nerve is responsible for the motor innervation of the extensor muscles in the posterior compartment of the forearm?

Median nerve
Radial nerve
Ulnar nerve
Musculocutaneous nerve
#5

Which muscle in the posterior compartment of the forearm is responsible for extending the index finger?

Extensor indicis
Extensor digitorum
Extensor carpi radialis
Brachioradialis
#6

Which muscles are primarily responsible for extension at the elbow joint in the posterior compartment of the forearm?

Flexor carpi ulnaris
Brachioradialis
Triceps brachii
Flexor digitorum superficialis
1 answered
#7

What is the innervation of the muscles in the posterior compartment of the forearm?

Median nerve
Radial nerve
Ulnar nerve
Musculocutaneous nerve
#8

Which of the following is not a muscle in the posterior compartment of the forearm?

Extensor digitorum
Flexor carpi radialis
Abductor pollicis longus
Supinator
#9

What is the action of the extensor pollicis longus muscle in the posterior compartment of the forearm?

Thumb abduction
Thumb flexion
Thumb extension
Thumb opposition
#10

Which muscle in the posterior compartment of the forearm is responsible for extending the little finger (pinky)?

Extensor digiti minimi
Flexor digiti minimi
Abductor digiti minimi
Palmaris longus
#11

What is the primary function of the brachioradialis muscle in the posterior forearm compartment?

Elbow flexion
Elbow extension
Pronation of the forearm
Supination of the forearm
#12

Which muscle in the posterior compartment of the forearm is the primary supinator of the forearm?

Brachialis
Brachioradialis
Supinator
Pronator teres
#13

What is the anatomical term for the space between the olecranon process and the posterior aspect of the humerus during flexion of the forearm?

Antecubital fossa
Cubital tunnel
Cubital fossa
Coronoid fossa
#14

Which nerve is responsible for the sensory innervation of the skin over the dorsal aspect of the hand in the posterior forearm compartment?

Median nerve
Ulnar nerve
Radial nerve
Musculocutaneous nerve
#15

What is the primary function of the anconeus muscle in the posterior compartment of the forearm?

Elbow flexion
Elbow extension
Pronation of the forearm
Supination of the forearm
#16

Which of the following is not a branch of the radial nerve in the posterior compartment of the forearm?

Deep branch
Superficial branch
Posterior interosseous nerve
Anterior interosseous nerve
#17

What is the term for the joint formed by the proximal ends of the radius and ulna in the posterior compartment of the forearm?

Carpometacarpal joint
Distal radioulnar joint
Proximal radioulnar joint
Radiocarpal joint

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