A & P - Upper Limb, Innervation

By fleckck, Jun 2012

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Which plexus gives rise to the nerves that supply the upper limb?	Brachial plexus
Which nerve roots contribute to the brachial plexus?	C5-C8, T1
From proximal to distal, what are the subunits of the brachial plexus?	Roots, trunks, divisions, cords, branches Remember the mnemonic: Risk Takers Don't Cautiously Behave
Which 5 important peripheral nerves branch from the brachial plexus?	1) Axillary nerve 2) Musculocutaneous nerve 3) Radial nerve 4) Median nerve 5) Ulnar nerve
Which muscles are supplied by the axillary nerve?	Deltoid and teres minor
In general, which muscles are supplied by the musculocutaneous nerve?	Anterior muscles of the arm
In general, which muscles are supplied by the radial nerve?	Posterior muscles of arm and forearm
In general, which muscles are supplied by the median nerve?	Anterior muscles of the forearm and some of the muscles of the hand
In general, which muscles are supplied by the ulnar nerve?	Most of the muscles of the hand plus the anterolateral muscles of the forearm.
• Which nerve do you need to flex the forearm at the elbow joint?	o Musculocutaneous nerve
• Which nerve do you need to extend the forearm at the elbow joint?	o Radial nerve
• Which nerve do you need to flex the hand at the wrist joint?	o Median nerve
• Which nerve do you need to extend the hand at the wrist joint?	o Radial nerve

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