Anatomy study note · Upper limb

Brachioradialis

The muscle of the lateral forearm that forms the lateral boundary of the cubital fossa. Although supplied by the radial nerve, it flexes the elbow.

Key points

• Lateral supracondylar ridge → radial styloid.
• Radial nerve, but flexes the elbow.
• Rotates the forearm to midprone.
• Lateral border of the cubital fossa.
• Limb muscles: in situ from limb-bud mesenchyme.
• Upper limb bud C4–T2; lower limb bud L2–S2.
• Skeletal muscle: multinucleated, peripheral nuclei, striated.
• Epimysium → perimysium → endomysium.

The full note in the atlas also covers

Origin · Insertion · Action · Nerve supply · Histology · Development · Clinical notes

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Written from

• Snell’s Clinical Anatomy by Regions, 10th ed., ch. 3, PDF pp. 274, 309
• Inderbir Singh’s Human Embryology, ch. 7, PDF p. 109; ch. 10, PDF pp. 142–145
• BRS Cell Biology & Histology, 7th ed., ch. 8, PDF pp. 135–144

More from the upper limb

• Breast
• Carpal bones
• Cephalic vein
• Clavicle
• Coracobrachialis
• Deltoid
• Dorsal scapular nerve
• Elbow joint
• Extensor carpi radialis brevis
• Extensor carpi radialis longus
• Extensor carpi ulnaris
• Extensor digiti minimi

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