Anatomy study note · Upper limb

Ulnar artery

The larger terminal branch of the brachial artery. It runs down the medial forearm and enters the palm in front of the flexor retinaculum to form the superficial palmar arch.

Key points

• Larger terminal branch of the brachial artery.
• With the ulnar nerve; superficial to the flexor retinaculum.
• Forms the SUPERFICIAL palmar arch (distal border of the extended thumb).
• Common interosseous → anterior + posterior interosseous arteries.
• Upper limb axis artery: 7th cervical intersegmental.
• Radial and ulnar arteries appear late.
• Artery: intima / media (smooth muscle) / adventitia.
• Most named arteries are muscular; aorta is elastic.

The full note in the atlas also covers

Course · Branches · Histology · Development · Clinical notes

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Written from

• Snell’s Clinical Anatomy by Regions, 10th ed., ch. 3, PDF pp. 380–381, 383–384
• Inderbir Singh’s Human Embryology, ch. 15, PDF pp. 256, 258
• BRS Cell Biology & Histology, 7th ed., ch. 11, PDF pp. 197–199

More from the upper limb

• Ulnar nerve
• Veins of the hand
• Wrist joint
• Abductor pollicis longus
• Acromioclavicular joint
• Adductor pollicis
• Anconeus
• Axillary artery
• Axillary lymph nodes
• Axillary nerve
• Axillary vein
• Basilic vein

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