Biol129_C14 - Antebrachial Vessels Arteries The Brachial...

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1 Antebrachial Vessels Arteries • The Brachial Artery – Enters at cubital fossa – Splits at the level of the IOM into: • Ulnar and Radial Arteries – Radial and Ulnar Recurrent aa (knee) • Ulnar A gives a Common Interosseus A – Splits into A, P & recurrent IO aa
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2 Schematic Veins • Superficial & deep palmar arches drain to radial and ulnar vv. • The radial & ulnar vv become the brachial v.
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3 Innervation • Three important nerves derive from the brachial plexus •M ed i an n – Runs in cubital fossa med to Brachial A – Deep to carpal tunnel Innervation - 2 •U ln a r n
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4 The Hand Muscles of the Hand • Three distinct palmar areas: – Thenar • Proximal to the thumb – Hypothenar • Proximal to the digiti minimi (pinky) – Midpalmar region • Between the thenar and hypothenar
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5 Thenar Muscles • Four muscles – all control thumb • Adductor Pollicis – O: Capitate, bases of metacarp 2&3; I: Med surf of prox phalanx (found in web) – Draws thumb to palm for grip • Abductor Pollicis Brevis
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Biol129_C14 - Antebrachial Vessels Arteries The Brachial...

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