Vasculature

Question 1

What is the main artery pathway in the arm?

Answer 1

Subclavian > axillary > brachial > ulnar/radial

Question 2

What are the main branches of the subclavian artery?

Answer 2

• Vertebral artery (brain)
• Internal thoracic artery
• Thyrocervical artery (thyroid gland and neck)

Question 3

What is the route of the vertebral artery in the neck?

Answer 3

C6-1 transverse foramina
» foramen magnum
» unites with other vertebral artery

Question 4

What do the vertebral arteries form when they unite?

Answer 4

Basilar artery

Question 5

What is subclavian steal syndrome?

Answer 5

Subclavian artery occlusion proximal to vertebral artery&raquo_space; reversed blood flow

Question 6

Where does the subclavian artery become the axillary artery?

Answer 6

Lat border of 1st rib

Question 7

What are the 3 divisions of the axillary artery?

Answer 7

1) Superior to pec minor
2) Deep to pec minor
3) Inferior to pec minor

Question 8

What are the 2 branches from the 3rd part of the axillary artery?

Answer 8

Post & ant circumflex humeral arteries

Question 9

Where does the axillary artery become the brachial artery?

Answer 9

Inf border of teres major

Question 10

What are the 3 branches of the brachial artery?

Answer 10

-Profunda brachii, sup & inf ulnar collateral arteries

Question 11

Which part of the arm does the profunda brachii supply?

Answer 11

Post compartment (runs in radial groove with radial nerve)

Question 12

Where does the brachial artery divide and what into?

Answer 12

Cubital fossa

- radial and ulnar arteries

Question 13

What does the radial artery supply?

Answer 13

Anterolateral forearm (extensors and flexors)

Question 14

What does the ulnar artery supply?

Answer 14

Medial forearm (flexors and pronators)

Question 15

Which artery does the common interosseous artery come from?

Answer 15

Ulnar artery

Question 16

How do the radial and ulnar arteries enter the hand?

Answer 16

Radial - across floor of snuffbox (pulse point) & pierces 1st dorsal interosseous
Ulnar - Guyon’s canal (superficial to flexor retinaculum)

Question 17

What anastamoses are formed in the hand?

Answer 17

Radial artery&raquo_space; deep palmar arch

Ulnar artery&raquo_space; superficial palmar arch

Question 18

Which artery supplies med 3 1/2 digits?

Answer 18

Ulnar artery

Question 19

Which artery supplies lat 1 1/1 digits?

Answer 19

Radial artery

Question 20

What drains the back of the hand?

Answer 20

Dorsal venous arch

Question 21

Which sides do the cephalic and basilic veins drain?

Answer 21

Cephalic - lateral (»deltopectoral triangle to axillary vein)
Basilic - medial (recieves med cubital vein & joins deep veins to axillary vein)

Question 22

What are the 2 main superficial veins of the arm?

Answer 22

Basilic and cephalic

Question 23

What are the main deep veins of the arm?

Answer 23

• Venae comitantes
• Axillary vein
• Subclavian vein

Question 24

What are the venae comitantes?

Answer 24

Multiple veins that accompany arteries; drain venous arches and unite in cubital fossa

Question 25

What is the axillary vein formed from?

Answer 25

Union of basilic vein and brachial venae comitantes

-becomes subclavian under clavicle

Question 26

Where does the subclavian vein drain?

Answer 26

Joins internal jugular vein&raquo_space; brachiocephalic vein.

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