Cross sections of the upper extremity: Wrist and hand level

What is the position of the hand when it is pronated?

• The palm is facing up.

• The thumb is pointing away from the body.

• The thumb is pointing towards the body.

• The palm is facing down.

How many carpal bones are present in the wrist?

• 10

• 12

• 6

• 8

Which bone is the largest among the carpal bones?

• Scaphoid

• Lunate

• Capitate

• Hamate

How many phalanges does the thumb have?

• Three

• One

• Four

• Two

Which muscle group is known as the 'ball of the thumb'?

• Hypothenar eminence

• Interossei muscles

• Thenar eminence

• Lumbrical muscles

What is the function of the dorsal interossei muscles?

• Abduct the fingers

• Extend the fingers

• Adduct the fingers

• Flex the fingers

What is the primary role of the lumbrical muscles in the hand?

• Flex the metacarpophalangeal joints

• Extend the interphalangeal joints

• Both flex the metacarpophalangeal joints and extend the interphalangeal joints

• Abduct the fingers

Where is the ulnar artery located in relation to the flexor digitorum tendons?

• Posterior aspect

• Ulnar aspect

• Radial aspect

• Anterior aspect

Which nerve is found between the tendons of the flexor carpi radialis and flexor digitorum superficialis?

• Radial nerve

• Ulnar nerve

• Musculocutaneous nerve

• Median nerve

Which artery is difficult to spot in the cross-section of the hand?

• Axillary artery

• Brachial artery

• Ulnar artery

• Radial artery