Blood supply and nerves of hand Flashcards

1
Q

Main arteries forming collateral circulation in hand

A

radial a. and ulnar a.

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2
Q

Main nerves forming cutaneous branches of hand

A

ulnar n. and median n.

radial n. for lateral cutaneous dorsal half

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3
Q

Deep palmar arch (artery)

A

radial a. and ulnar a.

mainly radial a.

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4
Q

Superficial palmar arch (artery)

A

radial a. and ulnar a.

mainly ulnar a.

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5
Q

Median nerve innervation in hand

A

forms palmar cutaneous branch

  • recurrent branch innervates thenar compartment
  • lateral branch to 1st lumbrical
  • medial branch to 2nd lumbrical
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6
Q

Ulnar nerve innervation in hand

A

forms palmar cutaneous branch

  • -dorsal branch sensory to medial/dorsal aspect of hand
  • superficial branch to palmaris brevis
  • deep branch to hypothenar compartment, adductor compartment, interossei, and lumbricals 3, 4
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7
Q

Radial nerve innervation in hand

A
  • superficial branch to brachioradialis/extensor carpi radialis longus, skin to lateral half of dorsal aspect of hand
  • deep branch to supinator and other superficial extrinsic extensors
  • becomes post. interosseous n. at supinator, innervates deep extrinsic extensors
  • test at MCP joints
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