Anatomy study note · Upper limb

Nerve to subclavius

A small branch of the upper trunk (C5, 6) that supplies subclavius and the sternoclavicular joint.

Key points

• Upper trunk, C5–6.
• Supplies subclavius and the sternoclavicular joint.
• May give an accessory phrenic nerve.
• Upper limb nerves: C4–T2 segments; lower limb: L2–S2.
• Ventral root: basal-lamina neurons. Dorsal root: neural-crest ganglion cells.
• Nerve: epineurium → perineurium (blood–nerve barrier) → endoneurium.
• Cut nerve: Wallerian degeneration; regrows 0.5–3 mm/day.

The full note in the atlas also covers

Histology · Development · Clinical notes

Sign in free to see it on the 3D model, read the full note and practise questions on it.

Written from

• Snell’s Clinical Anatomy by Regions, 10th ed., ch. 3, PDF pp. 340, 395–398
• Inderbir Singh’s Human Embryology, ch. 17, PDF pp. 318, 321, 323–325; ch. 10, PDF pp. 143–144
• BRS Cell Biology & Histology, 7th ed., ch. 9, PDF pp. 163–166, 171–172

More from the upper limb

• Palmar aponeurosis
• Palmaris longus
• Pectoral nerves
• Pectoralis major
• Pectoralis minor
• Phalanges of the hand
• Pronator quadratus
• Pronator teres
• Radial artery
• Radial nerve
• Radioulnar joints and interosseous membrane
• Radius

Privacy policy · Designed by DATXOC LLC.