anat & phy 337 - Module 29: Upper Extremity | Vasculature

Subclavian artery

Major artery supplying the upper limb; becomes the axillary artery after crossing the first rib.

Thyrocervical trunk

Branch of subclavian; gives off arteries to neck/shoulder.

Suprascapular artery

Branch of thyrocervical trunk; supplies supraspinatus & infraspinatus.

Dorsal scapular artery

Supplies rhomboids and levator scapulae along medial scapula.

Axillary artery

Continuation of subclavian; supplies shoulder region; becomes brachial artery at teres major.

Brachial artery

Main artery of the arm; used for BP measurement; bifurcates into radial & ulnar.

Deep brachial artery (profunda brachii)

Main branch of brachial artery; supplies posterior arm (triceps).

Radial artery

Lateral forearm artery; common pulse point; contributes to deep palmar arch.

Ulnar artery

Medial forearm artery; primary contributor to superficial palmar arch.

Superficial palmar arch

Main arterial loop in palm formed mostly by ulnar artery.

Deep palmar arch

Deeper arterial loop mainly from radial artery.

Cephalic vein

Superficial vein on lateral arm → drains into axillary vein.

Basilic vein

Superficial vein on medial arm → becomes brachial/axillary vein.

Median cubital vein

Connects cephalic & basilic at elbow; common for venipuncture.

Brachial vein

Deep veins accompanying brachial artery.

Axillary vein

Formed by basilic + brachial veins; drains shoulder/upper limb.

Subclavian vein

Continuation of axillary vein; drains into brachiocephalic vein.

Dorsal scapular nerve (C5)

Innervates rhomboids & levator scapulae.

Long thoracic nerve (C5-C7)

Innervates serratus anterior.

Suprascapular nerve

Innervates supraspinatus, infraspinatus.

Nerve to subclavius

Innervates subclavius muscle.

Medial antebrachial cutaneous nerve

Sensory to medial forearm.

Medial brachial cutaneous nerve

Sensory to medial arm.

Medial pectoral nerve

Innervates pectoralis minor & part of pectoralis major.