Quiz on the Median Nerve

What is the function of the median nerve?

• Innervates the muscles of the forearm

• Supplies sensation to the skin of the hand

• Enables fine movements of the upper limb

• All of the above

Which muscles in the forearm are not innervated by the median nerve?

• Flexor carpi ulnaris

• Flexor digitorum profundus

• Flexor pollicis longus

• Flexor digitorum superficialis

Which area of the hand is innervated by the median nerve?

• Palmar and distal aspects of the thumb

• Radial half of the second digit

• Edges and sides of the second and fourth digits

• All of the above

Where is the median nerve formed?

• In the upper arm

• In the forearm

• In the hand

• In the brachial plexus

Which muscle is not supplied by the median nerve in the forearm?

• Pronator teres

• Palmaris longus

• Flexor digitorum superficialis

• Flexor carpi radialis

What is the name of the branch of the median nerve that supplies the flexor pollicis longus muscle?

• Anterior interosseous nerve

• Palmar cutaneous branch

• Recurrent branch

• Superficial branch

Where does the median nerve pass through to enter the forearm?

• Between the tendons of the biceps brachii and brachialis

• Between the deep and superficial heads of the pronator teres

• Between the flexor digitorum profundus and flexor digitorum superficialis

• Between the flexor retinaculum and the carpal bones

Which nerve is spared in carpal tunnel syndrome?

• Palmar cutaneous branch of the median nerve

• Superficial branch of the median nerve

• Anterior interosseous nerve

• Recurrent branch of the median nerve

What is the most common cause of carpal tunnel syndrome?

• Previous fracture of the distal radius

• Traumatic dislocation of the lunate

• Obesity

• Diabetes with peripheral polyneuropathy

What is the pathophysiology behind carpal tunnel syndrome?

• Impaired blood flow to the median nerve

• Inflammatory reaction and edema

• Adrenal degeneration

• All of the above