Arterial supply of Upper Limb
In terms of arterial supply, the upper limb has 5 major vessels, the subclavian, axillary, brachial, radial, and ulnar arteries.
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from outer border of first rib
from subclavian artery
enters axilla through apex
runs along lateral wall

pectoralis minor
above,deep
behind,deep
below,superficial

Anterior
skin & fascia
clavicular head of P.Major
clavipectoral fascia
communicating loop
Posterior
1st digitation of serratus anterior
1st intercostal space
nerve to serratus anterior
med. cord of brachial plexus
Medial
axillar vein
apical axillary L.N group
Lateral
lat. & post. cords of brachial plexus

Anterior
skin, superficial & deep fascia
pectoralis minor
pectoralis major
Posterior
subscapularis
post. cord of brachial plexus
Medial
med. cord of brachial plexus
axillary nerve
Lateral
lat. cord of brachial plexus
corachobrachialis

Anterior
upper part :
skin & fascia
pectoralis major
med. root of median n.
lower part
skin & fascia ONLY
Posterior
radial & axillary n.
subscapularis
teres major
Medial
med. cutaneous n. of forearm
med. cutaneous n. of arm
ulnar n.
axillary vein
Lateral
chorachobrachialis, seperated by:
-musculacutaneous n.
-lat. root of median n.
-median n.

sup. thoracic a.
along upper border of pectoralis minor
supply upper pt. of med. wall of axilla

lat. thoracic a.
lower border of pectoralis minor
sends external mammary branches to breast
acromio-thoracic a.
acromial branch
into deltoid to acromion
pectoral branch
btwn pectoralis major & minor
clavicular branch
nutrient a. of clavicle
deltoid branch
in deltopectoral groove

ant. circumflex humeral a.
in front of surgical neck
enters cruciate anastomose
post. circumflex humeral a.
pass axillary n. in quadriangular space
curves around surgical neck
enters cruciate anastomose
subscapular a.
*largest branch
lower border of subscapularis
continue as thoracodorsal a.
pierce latissimus dorsi