Muscles of the Forearm & Hand

What is the primary action of the muscles in the anterior compartment of the forearm?

• Flexion of the wrist and fingers and pronation of the forearm

• Extension of the wrist and fingers and supination of the forearm

• Flexion of the elbow

• Extension of the elbow

What is the primary action of the muscles in the posterior compartment of the forearm?

• Flexion of the wrist and digits

• Extension of the wrist and digits

• Pronation of the forearm

• Supination of the forearm

Which nerves innervate the muscles of the anterior compartment of the forearm?

• Radial and ulnar nerves

• Ulnar and median nerves

• Median and radial nerves

• Ulnar and axillary nerves

Name the muscle shown in red.

• Flexor pollicis longus

• Flexor digitorum profundus

• Flexor carpi ulnaris

• Pronator quadratus

What is the innervation of the Flexor Carpi Ulnaris?

• Median nerve

• Ulnar nerve

• Radial nerve

• Musculocutaneous nerve

Which muscle originates from the medial epicondyle and is absent in about 15% of the population?

• Flexor Carpi Ulnaris

• Palmaris Longus

• Flexor Carpi Radialis

• Pronator Teres

Which muscle is responsible for pronation of the forearm?

• Flexor Carpi Ulnaris

• Palmaris Longus

• Flexor Carpi Radialis

• Pronator Teres

The Flexor Carpi Radialis attaches to the base of which metacarpals?

• Metacarpals I and II

• Metacarpals II and III

• Metacarpals III and IV

• Metacarpals IV and V

Which of the muscles shown attaches closest to the thumb?

• Flexor carpi radialis

• Pronator teres

• Palmaris longus

• Flexor carpi ulnaris

Which muscle is the only one in the intermediate compartment of the forearm?

• Flexor carpi ulnaris

• Flexor digitorum superficialis

• Brachioradialis

• Pronator teres