Upper Limb Blood Supply and Innervation: Interactive Quizzes for Medical Students

Question 1

Which artery is the main arterial supply to the lateral side of the forearm, supplying structures such as the brachioradialis and extensor carpi radialis brevis?

Accepted Answer

Radial artery

Answer

Ulnar artery

Answer

Brachial artery

Answer

Axillary artery

Question 2

Which vein drains the vast majority of blood from the upper limb, collecting blood from both the superficial and deep veins of the forearm and hand?

Accepted Answer

Brachial vein

Answer

Median cubital vein

Answer

Radial vein

Answer

Ulnar vein

Question 3

Which nerve, arising from the brachial plexus, is responsible for innervating the flexor muscles of the forearm, including the flexor carpi radialis and the pronator teres?

Accepted Answer

Median nerve

Answer

Ulnar nerve

Answer

Radial nerve

Answer

Musculocutaneous nerve

Question 4

Where does the axillary artery, which supplies the shoulder and upper arm, become the brachial artery?

Accepted Answer

At the level of the axilla, where the axillary artery continues into the arm

Answer

At the level of the elbow, where the axillary artery passes through the cubital fossa

Answer

At the level of the shoulder, where the axillary artery enters the axilla

Answer

At the level of the wrist, where the brachial artery divides into the radial and ulnar arteries

Question 5

Which of the following is NOT a branch of the brachial artery, which arises in the axilla and supplies the forearm and elbow?

Accepted Answer

Median artery

Answer

Radial artery

Answer

Ulnar artery

Answer

Inferior ulnar collateral artery

Question 6

What is the main sensory nerve supplying the medial side of the hand, providing sensation to the掌侧aspect, including the little finger and the medial half of the ring finger?

Accepted Answer

Ulnar nerve

Answer

Median nerve

Answer

Radial nerve

Answer

Axillary nerve

Question 7

Which nerve, arising from the brachial plexus, innervates the extensor carpi radialis longus and brevis muscles, which extend the wrist joint?

Accepted Answer

Radial nerve

Answer

Median nerve

Answer

Ulnar nerve

Answer

Musculocutaneous nerve

Question 8

What is the most common site for a radial artery puncture, a procedure used to obtain blood samples or perform arterial line insertion?

Accepted Answer

At the level of the wrist, where the radial artery is superficial and easily accessible

Answer

At the level of the elbow, where the radial artery is located deep within the cubital fossa

Answer

At the level of the axilla, where the radial artery is a branch of the axillary artery

Answer

At the level of the shoulder, where the radial artery is not readily accessible

Question 9

At what level does the axillary artery become the brachial artery?

Accepted Answer

At the lower border of the axilla

Answer

At the level of the shoulder joint

Answer

At the level of the elbow joint

Answer

At the level of the wrist joint

Question 10

Which muscle is NOT innervated by the musculocutaneous nerve?

Accepted Answer

Triceps brachii

Answer

Biceps brachii

Answer

Brachialis

Answer

Coracobrachialis

Question 11

Through which structure does the median nerve enter the hand?

Accepted Answer

Carpal tunnel

Answer

Guyon's canal

Answer

Subscapular canal

Answer

Cubital tunnel

Question 12

Which of the following represents the primary collateral circulation to the hand and forearm if the brachial artery is blocked?

Accepted Answer

Radial collateral and ulnar collateral arteries

Answer

Radial recurrent artery

Answer

Thoracoacromial and subscapular arteries

Answer

Posterior circumflex humeral artery

Question 13

Which vein is responsible for draining blood from the superficial palmar arch?

Accepted Answer

Cephalic vein

Answer

Radial vein

Answer

Basilic vein

Answer

Median cubital vein

Question 14

Which nerve innervates the biceps brachii?

Accepted Answer

Musculocutaneous nerve

Answer

Ulnar nerve

Answer

Median nerve

Answer

Radial nerve

Question 15

Which nerve is NOT a branch of the brachial plexus?

Accepted Answer

Suprascapular nerve

Answer

Ulnar nerve

Answer

Radial nerve

Answer

Median nerve

Question 16

Which artery supplies the medial aspect of the forearm with blood?

Accepted Answer

Ulnar artery

Answer

Brachial artery

Answer

Subclavian artery

Answer

Radial artery

Question 17

Which nerve provides sensory innervation to the lateral aspect of the hand?

Accepted Answer

Radial nerve

Answer

Median nerve

Answer

Ulnar nerve

Answer

Musculocutaneous nerve

Question 18

Which nerve innervates the triceps brachii muscle?

Accepted Answer

Radial nerve

Answer

Ulnar nerve

Answer

Median nerve

Answer

Musculocutaneous nerve

Question 19

Which artery is responsible for supplying blood to the ulnar aspect of the forearm?

Accepted Answer

Ulnar artery

Answer

Brachial artery

Answer

Axillary artery

Answer

Radial artery

Question 20

Which nerve provides cutaneous innervation to the lateral aspect of the forearm?

Accepted Answer

Radial nerve

Answer

Ulnar nerve

Answer

Median nerve

Question 21

Which nerve innervates the flexor carpi ulnaris muscle?

Accepted Answer

Ulnar nerve

Answer

Radial nerve

Answer

Median nerve

Question 22

Which nerve provides cutaneous innervation to the palmar surface of the thumb?

Accepted Answer

Median nerve

Answer

Ulnar nerve

Answer

Radial nerve