opponens

A name given to several muscles of the fingers or toes, by the action of which these digits are opposed to the others. The o. muscles of the hands act at the carpometacarpal joints, cupping the palm; this enables flexion at the metacarpophalangeal joints to oppose the thumb to the small finger or vice versa. Although comparable muscles in the foot are called “o.,” no opposition occurs in the foot. [L. op-pono (obp-), pres. p. -ens, to place against, oppose]

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op·po·nens ə-'pō-.nenz n, pl -nen·tes .äp-ə-'nen-(.)tēz or -nens any of several muscles of the hand or foot that tend to draw one of the lateral digits across the palm or sole toward the others

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n.
one of a group of muscles in the hand that bring the digits opposite to other digits. For example, the opponens pollicis is the principal muscle causing opposition of the thumb.

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op·po·nens (o-poґnənz) [L.] opposing; said of an opposing structure, as musculus opponens.

Medical dictionary. 2011.

Look at other dictionaries:

  • Opponens — can refer to: Opponens digiti minimi muscle Opponens pollicis muscle This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to p …   Wikipedia

  • opponens — op|po̱nens [zu lat. opponere, oppositum = entgegenstellen]: entgegenstellend, gegenüberstellend; z. B. in der Fügung ↑Musculus opponens pollicis …   Das Wörterbuch medizinischer Fachausdrücke

  • opponens — n. one of a group of muscles in the hand that bring the digits opposite to other digits. For example, the opponens pollicis is the principal muscle causing opposition of the thumb …   The new mediacal dictionary

  • opponens — n. muscle of the hand; muscle of the foot …   English contemporary dictionary

  • opponens — op·po·nens …   English syllables

  • opponens — …   Useful english dictionary

  • Opponens digiti minimi muscle — The muscles of the thumb. (Opponens quinti digiti visible at center right.) …   Wikipedia

  • Opponens pollicis muscle — The muscles of the thumb …   Wikipedia

  • Opponens pollĭcis — Opponens pollĭcis, ein Daummuskel, s.u. Handmuskeln B) …   Pierer's Universal-Lexikon

  • opponens digiti minimi — opponens dig·i·ti min·i·mi dij ə .tī min ə .mī n a triangular muscle of the hand that arises from the hamate and adjacent flexor retinaculum, is inserted along the ulnar side of the metacarpal of the little finger, and functions to abduct, flex,… …   Medical dictionary

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