15 Questions
What artery arises from the brachiocephalic trunk?
Right subclavian artery
At what level do the posterior and anterior circumflex humeral arteries arise?
Level of the humeral surgical neck
Which artery becomes the brachial artery at the level of the teres major muscle?
Axillary artery
What structure does the profunda brachii supply in the upper arm?
Triceps brachii
Where does the brachial artery terminate by contributing to a network of vessels?
Elbow joint
Which artery descends down the arm immediately posterior to the median nerve?
Brachial artery
Where does the brachial artery terminate?
At the cubital fossa
Which artery supplies the posterior aspect of the forearm?
Radial artery
Which artery supplies the anterior aspect of the forearm?
Ulnar artery
In the hand, where does the ulnar artery divide into two branches?
Anterior to the flexor retinaculum
What is the name of the arch formed by anastomosis of ulnar and radial arteries in the hand?
Superficial palmar arch
Which artery contributes mainly to the supply of the thumb and lateral side of the index finger?
Radial artery
Where does the radial artery enter the hand?
Dorsally, crossing the floor of the anatomical snuffbox
What does the deep palmar arch give rise to?
Five arteries supplying the digits
Where do common palmar digital arteries arise from?
Superficial palmar arch
Study Notes
Arteries of the Upper Limb
- The right subclavian artery and the left subclavian artery arise from the brachiocephalic trunk.
- The posterior and anterior circumflex humeral arteries arise at the level of the anatomical neck of the humerus.
- The axillary artery becomes the brachial artery at the level of the teres major muscle.
- The profunda brachii supplies the posterior compartment of the upper arm.
- The brachial artery terminates by contributing to a network of vessels in the cubital fossa.
- The ulnar artery descends down the arm immediately posterior to the median nerve.
- The brachial artery terminates by dividing into the radial and ulnar arteries.
- The ulnar artery supplies the posterior aspect of the forearm.
- The radial artery supplies the anterior aspect of the forearm.
- The ulnar artery divides into two branches, the superficial and deep palmar branches, in the hand.
- The deep palmar arch is formed by anastomosis of the ulnar and radial arteries in the hand.
- The radial artery contributes mainly to the supply of the thumb and lateral side of the index finger.
- The radial artery enters the hand anterior to the flexor retinaculum.
- The deep palmar arch gives rise to the palmar metacarpal arteries.
- The common palmar digital arteries arise from the superficial palmar arch.
Test your knowledge about the arterial supply to the upper limb, including the origin of the subclavian artery, the path of the axillary artery, and the branches at the level of the humeral surgical neck.
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