Psoas


Psoas
Muscles of the lower back (the loin). There are two psoas muscles on each side of the back. The larger of the two is called the psoas major and the smaller the psoas minor. The psoas major originates at the spine around the bottom of the rib cage and runs down to the thigh bone (the femur). The psoas major acts to flex the hip. The psoas minor also originates at the spine around the bottom of the rib cage but it runs down to the bony pelvis. It acts to flex the lower (lumbar) spine. The "p" in "psoas" is silent and the emphasis is on the first syllable: so-as. The word "psoas" is Greek for the loins, the muscles of the lower back.
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See p. major (muscle), p. minor (muscle). [G. psoa, the muscles of the loins]

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pso·as 'sō-əs n, pl pso·ai 'sō-.ī or pso·ae -.ē either of two internal muscles of the loin:
a) PSOAS MAJOR
b) PSOAS MINOR

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n.
a muscle in the groin that acts jointly with the iliacus muscle to flex the hip joint. A smaller muscle, psoas minor, has the same action but is often absent.

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pso·as (soґas) [Gr. genitive of psoa muscles of lower back] see musculus psoas major and musculus psoas minor, under musculus.

Medical dictionary. 2011.

Look at other dictionaries:

  • psoas — psoas …   Dictionnaire des rimes

  • psoas — [ psɔas ] n. m. • 1690; gr. psoa « lombes » ♦ Anat. Chacun des deux muscles pairs appliqués sur la partie antérieure latérale de la douzième vertèbre dorsale et des quatre premières vertèbres lombaires. Muscle psoas iliaque : masse musculaire… …   Encyclopédie Universelle

  • psoas — PSÓAS, psoaşi, s.m. (anat.) Fiecare dintre cei doi muşchi inseraţi pe faţa anterioară a vertebrelor lombare şi la capătul femurului, care ajută la flexiunea coapsei faţă de trunchi. – Din fr. psoas. Trimis de oprocopiuc, 24.04.2004. Sursa: DEX 98 …   Dicționar Român

  • Psoas — Saltar a navegación, búsqueda Psoas puede designar a dos músculos distintos: La porción lumbar del músculo psoasilíaco. El músculo psoas menor. En la exploración física de una sospecha de apendicitis suele aparecer el Signo del psoas. Obtenido de …   Wikipedia Español

  • Psoas — Pso as, n. [Gr. ? a muscle of the loin: cf. f. psoas.] (Anat.) An internal muscle arising from the lumbar vertebr[ae] and inserted into the femur. In man there are usually two on each side, and the larger one, or great psoas, forms a part of the… …   The Collaborative International Dictionary of English

  • Psoas — can refer to: * Psoas major muscle * Psoas minor muscle …   Wikipedia

  • Psoas —   [zu griechisch psóa »Lendengegend«] der, , Mụsculus psoas, zusammenfassende Bezeichnung für den großen und kleinen Lendenmuskel (Musculus p. major und minor). Er entspringt im Bereich der letzten Brust und der ersten Lendenwirbel, vereinigt… …   Universal-Lexikon

  • psoas — m. anat. Músculo fusiforme que se inserta en las vértebras lumbares y en el trocánter menor del fémur. Su contracción provoca la flexión del muslo o del tronco. Medical Dictionary. 2011 …   Diccionario médico

  • psoas — 1680s, from Gk. psoa (pl. psoai, acc. psoas) muscles of the loins …   Etymology dictionary

  • psoas — |ô| s. m. pl. [Anatomia] Nome de dois músculos (grande e pequeno psoas) que se inserem no osso ilíaco e que ajudam o movimento das coxas …   Dicionário da Língua Portuguesa

  • psoas — major; n. a muscle in the groin that acts jointly with the iliacus muscle to flex the hip joint. A smaller muscle, psoas minor, has the same action but is often absent …   The new mediacal dictionary


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