arterial supply to the upper limb Flashcards
8 main arteries of upper limb
- subclavian
- axillary
- brachial
- ulnar
- radial
- palmar arches
- dorsal digital arteries
- palmar digital arteries
where does the right subclavian artery come from?
brachiocephalic trunk
where does the left subclavian artery come from?
arch of aorta
what does the subclavian artery become after it crosses the lateral border of 1st rib?
axillary arteries
what is an anastomosis?
connection between arteries/blood vessels
4 important arteries in posterior scapular region
- suprascapular artery
- circumflex scapular artery
- thoracodorsal artery
- dorsal scapular artery
suprascapular artery origin general location?
base of the neck
suprascapular artery arises directly from?
subclavian artery
suprascapular artery arises indirectly via?
thyrocervical trunk which comes off subclavian artery
where does the suprascapular artery enter posterior scapular region?
superior to suprascapular notch
where does suprascapular artery go after suprascapular notch?
enters supraspinous fossa running between scapula and supraspinous muscle
where does suprascapular artery go after supraspinous fossa?
descends to reach infraspinous fossa
what muscles does the suprascapular artery supply?
supraspinatus and infraspinatus muscles
what other structures does suprascapular artery supply (not muscle)?
sends articular branches to AC and shoulder joints
what artery is the circumflex scapular artery a branch of?
subscapular artery
where does the circumflex scapular artery enter the posterior scapular region?
passes through origin of teres minor
thoracodorsal artery is a branch of what artery?
subscapular artery
thoracodorsal and circumflex scapular arteries branch of from what artery
subscapular artery
thoracodorsal artery runs from what to what?
starts at point where circumflex scapular artery breaks away and then descends with thoracodorsal nerve to the latissimus dorsi muscle
subscapular artery origin
3rd part of the axillary artery
what artery is the dorsal scapular artery a branch of?
subclavian artery
where is the dorsal scapular artery in relation to the scapula
runs under rhomboids along medial border of scapula to inferior angle
what muscles does dorsal scapular artery supply?
rhomboids, latissimus dorsi, trapezius
what does the subclavian artery turn into and where?
becomes the axillary artery at the lateral border of the 1st rib
what does the axillary artery turn into and where?
becomes the brachial artery at the lateral border of teres major
1st part of axillary artery
medial to pec minor
lateral margin of 1st rib to upper-medial border of pec. minor
2nd part of axillary artery
posterior to pec. minor
3rd part of axillary artery
distal/lateral to pec minor
runs from the lower boarder of pec minor to termination at teres major
how many branches from axillary artery
6 branches
1 from 1st part
2 from 2nd part
3 from 3rd part
branch from first part of axillary artery
1 branch - superior thoracic artery
branches from 2nd part of axillary artery
2 branches - thoracoacromial and lateral thoracic arteries
branches from 3rd part of axillary artery
3 branches - subscapular,
anterior circumflex humeral
posterior circumflex humeral arteries
thoracoacromial artery branches ABCD
- acromial
- breast/pectoral
- clavicular
- deltoid
