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35 Cards in this Set
- Front
- Back
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Name the Thenar muscles |
Abductor pollicis brevis Flexor pollicis brevis Opponens pollicis |
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What muscle is deep to the thenar muscles? |
Adductor pollicis |
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The hypothenar muscles consist of what muscles? |
Abductor pollicis brevis Flexor pollicis brevis Opponens pollicis |
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What muscle are the flexor tendons attached to? |
Flexor digitorum superficialis |
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What constitute the intrinsic muscles of the hand? |
Thenar muscles Hypothenar muscles Interosseous membrane Lumbricals |
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Which tendons are attached to the dorsal surface of the metacarpals? |
Extensor carpi radialis and ulnaris tendons |
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What group of muscles are responsible for straight finger flexion? |
Lumbricals |
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Extensor Digiti Minimi |
Action - Extends all jnt of little finger Nerve - Post interosseous n. C7,8 |
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Extensor digitorum |
Action - Extends all joints of fingers Nerve - Post interosseous n. C7,8 |
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Extensor Indicis |
Action - Extends all joints of index finger Nerve - Post interosseous n. C7,8 |
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Extensor Pollicis Brevis |
Action - Extends MCP joint of thumb Nerve - Post interosseous n. C7,8 |
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Extensor Pollicis Longus |
Action - Extends IP and MCP joints of the thumb Nerve - Post interosseous n. C7,8 Notes - Forms ulnar side of snuff box |
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Flexor Carpi Radialis |
Action - Flexes & abducts wrist Nerve - Median n. C 6,7 |
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Flexor Carpi Ulnaris |
Action - Flexes & adducts wrist. Fixes pisiform during action of hypothenar Nerve - Ulnar n. Passes between two heads. |
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Flexor Digiti Minimi Brevis |
Action - Flexes MCP joint of little finger Nerve - Deep br of ulnar n. C8,T1 |
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Flexor Digitorum Profundus |
Action - Flexes distal IP jnts, 2ndarily flexes prox IP and MCP jnts at wrist Nerve - Median n. C8,T1 Ulnar n. C8,T1 |
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Flexor Digitorum Superficialis |
Action - Flexes prox IP jnts & 2ndarily MCP jnts + wrist Nerve - Median n. C7,8,T1 |
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What hand muscles control abduction and adduction? |
Interosseous muscles |
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Flexor Pollicis Brevis |
Action - Flexes MCP jnt of thumb Nerve - Recurrent br of median n. C8, T1 |
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Flexor Pollicis Longus |
Action - Flexes distal phalanx of thumb Nerve - Ant interosseous n. C7,8 |
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Interossei - Dorsal of Hand |
Action - Abduct index, middle & ring fingers from axis of middle finger. Flex MCP jnt whilst extending IP jnts Nerve - Deep br of Ulnar n. C8, T1 |
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Interossei - Palmar of Hand |
Action - Adduct index, ring & little fingers to axis of middle finger. Flex MCP jnt whilst extending IP jnts. Nerve - Deep br of Ulnar n. C8,T1 |
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Lumbricals of Hand |
Action - Flex MCP jnts & extends IP jnts of fingers Nerve - Lat 2: Median n. C8,T1. Med 2: C8, T1 |
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Opponens Digiti Minimi |
Arises - Flexor retinaculum & hook or hamate Inserts - Ulnar border of shaft of 5th MC Action - Opposes CMC jnt of little finger Nerve - Deep br of Ulnar n. C8, T1 |
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Opponens Pollicis |
Action - Opposes CMC jnt of thumb. Nerve - Recurrent br of Median n. C8, T1. |
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Palmaris Brevis |
Action - Steadies & corrugates skin of palm to help with grip Nerve - Superficial br. of Ulnar n. C8, T1 |
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Palmaris Longus |
Action - Flexes wrist & tenses palmar aponeurosis Nerve - Median n. C7,8 |
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Palmar and Dorsal, which abduct and adduct? |
PAD, DAB |
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Abductor digiti minimi? |
Action - Abducts little finger at MCP joint Nerve - Deep br. of Ulnar n. C8,T1 |
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Abductor Pollicis Brevis |
Action - Abducts thumb at MCP & CMC jnts Nerve - recurrent br. of Median n. C8,T1 |
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Abductor Pollicis Longus |
Action - Abducts & extends thumb at CMC jnt Nerve - Post interosseous n. C7,8 Notes- forms radial side of snuffbox |
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Adductor Pollicis |
Action - Adducts CMC thumb joint Nerve - Deep br. Ulnar n. C8,T1 |
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Extensor Carpi Radialis Brevis |
Action - Extends and abducts hand at wrist Nerve - Post interosseous n. C7,8 |
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Extensor Carpi Radialis Longus |
Action - Extends & abducts hand at wrist Nerve - Radial n. C6,7 |
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Extensor Carpi Ulnaris |
Action - Extend and adducts hand at wrist Nerve - Post interosseous n. C7,8 |
