asmi
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What are the actions of lumbricals and interosseus muscles of hand and what is the nerve supply ?
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| kiranmayi
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dorsal interosseous:
flex the metacarpophalangeal joint, extend the proximal and distal interphalangeal joints of digits 2-4, abduct digits 2-4 (abduction of digits in the hand is defined as movement away from the midline of the 3rd digit)
Innervation by ulnar nerve, deep branch
palmar interosseous:
flexes the metacarpophalangeal, extends proximal and distal interphalangeal joints and adducts digits 1, 2, 4, & 5 (adduction of the digits of the hand is in reference to the midline of the 3rd digit)
Innervation by ulnar nerve, deep branch
lumbricals:
flex the metacarpophalangeal joints, extend the proximal and distal interphalangeal joints of digits 2-5
Innervation by median nerve (radial 2) via palmar digital nerves & ulnar nerve (ulnar 2) via deep branch
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| asmi
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good
thanks kiran :idea:
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