Glossary of Neurovasculature of Upper Extremity

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Branches from Brachial Plexus Rami
1. dorsal scapular C5
2. Long thoracic C5-C7
branches from Upper Trunk
suprascapular nerve
ha tricked ya only 1
Branch from lateral cord
lateral pectoral nerve
branches from medial cord
1.medial brachial and antebrachial cutaneous nerves
2.medial pectoral nerve
Branches from Posterior Cord
1. upper subscapular nerve
2. thoracodorsal nerve
3. lower subscapular nerve
terminal branches
1. musculocutaneous
2. ulnar
3. radial
4. axillary
5. median
Brachial plexus
innervates pectoral girdle and upper limb. C5-C8, T1
The 5 nerves from this plexus converge into 3 trunks, superior middle and inferior.
Roots of brachial plexus
5 nerves; C5, 6, 7, 8 and T1
Collectively form 3 roots
Trunks of brachial plexus
Upper C5 and C6
Middle C7
Lower C8 and T1

Divide into 6 Divisions, anteriorly and posteriorly
Divisions of Brachial Plexus
Come off of trunks (upper, middle, and lower). Two divisions per trunk, one anterior and one posterior. Converge to give Cords
Cords of Brachial Plexus
lateral, posterior, medial
lateral cord
convergance of anterior divisions of upper(C5-6) and middle(C7) trunks of brachial plexus.
posterior cord
convergance of posterior divisions of all three trunks of the brachial plexus
medial cord
a continuance of the lower trunk (like its anterior division, because its posterior goes to the posterior cord)
Branches of the Brachial Plexus
14 Total:
Dorsal scapular
long thoracic
lateral pectoral
medial brachial and antebrachial cutaneous nerves
medial pectoral
upper subscapular
lower subscapular
axillary artery
offspring of the subclavian artery. upon crossing the teres major at the armpit, becomes the brachial artery.
brachial artery
supplies the brachial muscles (surprise); offspring of the axillary arery. gives rise to the deep brachial artery, and then continues down the spiral groove of the humerus.
deep brachial artery
a branch of the brachial artery; supplies blood to the posterior upper arm.
ulnar artery
a branch of the brachial artery that splits at the elbow joint (cubital fossa). the other branch is the radial
radial artery
a branch of the brachial artery that splits at the cubital fossa. the other branch is the ulnar
superficial palmar arch
the fate of the ulnar artery; a loop in the palm of the hand (facing anteriorly in anatomical position). anastomoses with the deep palmar arch.
deep palmar arch
the fate of the radial artery; anastomoses with the superficial palmer arch; located in the back of the hand (dorsal in anatomical position)
Deep veins of the arm
correspond to the arteries they run with
superficial veins of the arm
cephalic, basilic, median cubital
Subclavian artery
underneath the clavicle, offspring of the brachiocephalic trunk. upon coming out from hiding under the clavicle, becomes the axillary artery in the armpit.

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