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Hand Muscles
| Question | Answer |
|---|---|
| Origin of Abductor Pollicis Brevis | scaphoid, trapezium, and flexor retinaculum |
| Origin of opponens pollicis | flexor retinaculum and trapezium |
| origin of flexor pollicis brevis | flexor retinaculum, trapezium, 1st metacarpal |
| origin of adductor pollicis | capitate, trapexoid, 2nd and 3rd metacarpal |
| origin of palmaris brevis | flexor retinaculum and palmar aponeurosis |
| insertion of abductor pollicis brevis | base of proximal phalanz of thumb |
| insertion of opponens pollicis | lateral side of 1st metacarpal |
| insertion of flexor pollicis brevis | base of proximal phalanx of thumb |
| insertion of adductor pollicis | medial side of proximal phalanx of thumb |
| insertion of palmaris brevis | skin of palm |
| action of abductor Pollicis brevis | abduction of thumb |
| action of opponens pollicis | opposition |
| action of flexor pollicis brevis | flexion of thumb and adduction assistance |
| action of adductor pollicis | adduction of thumb |
| action of palmaris brevis | steadies to help with grip |
| innervations of median nerve | ab PB, Opponens P, Flex PB, lumbricales |
| innervation of ulnar nerve | ad P, Palmaris B, Ab DM, Flex DMB, Opponens DM, Lumbricales, Interossei Dorsales, Interossei Palmaris |
| Origin of abductor digiti minimi | pisiform and tendon of flexor carpi ulnaris |
| origin of flexor digiti minimi brevis | flexor retinaculum and hook of hamate |
| origin of opponens digiti minimi | flexor retinaculum and hook of hamate |
| origin of lumbricales | tendons of flexor digitorum progundus of each finger |
| origin of interossei dorsales | adjacent sides of metacarpals |
| origin of interossei palmaris | sides of shafts of metacarpals of all digits |
| Which muscles insert of the medial side of 5th metacarpal | ab DM, Flex DMB, Opponens DM |
| insertion of lumbricales | lateral side of tendons of extensor digitorum on proximal phalanges of ea finger` |
| insertion of interossei dorsales | proximal phalanx of ea finger |
| insertion of interossei palmaris | sides of bases of proximal phalanges of all digits |
| action of abductor DM | abducts 5th finger |
| action of flex DMB | flexion of 5 finger |
| action of opponens DM | opposition |
| action of lumbricales | flexion of each finger at MCP and extension of each finger at PIP and DIP |
| action of interossei dorsales | abduction and flexion of ea finger 2-4 at MCP, extension of ea finger at PIP and DIP |
| action of interossei palmaris | adduction of fingers and flexion at MCP |
Created by:
twin1westie
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