| PM | Psoas major |
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| hitch | 1. To become entangled or caught; to be linked or yoked; to unite; to cling. "Atoms . . . Which at length hitched together." (South) 2. To move interruptedly or with halts, jerks, or steps; said of something obstructed or impeded. "Slides into verse, and hitches in a rhyme." (Pope) "To ease themselves . . . By hitching into another place." (Fuller) 3. To hit the legs together in going, as horses; to interfere. Origin: Cf. Scot. Hitch a motion by a jerk, and hatch, hotch, to move by jerks, also Prov. G. Hiksen, G. Hinken, to limp, hobble; or E. Hiccough; or possibly akin to E. Hook. 1. A catch; anything that holds, as a hook; an impediment; an obstacle; an entanglement. 2. The act of catching, as on a hook, etc. 3. A stop or sudden halt; a stoppage; an impediment; a temporary obstruction; an obstacle; as, a hitch in one's progress or utterance; a hitch in the performance. 4. A sudden movement or pull; a pull up; as, the sailor gave his trousers a hitch. 5. A knot or noose in a rope which can be readily undone; intended for a temporary fastening; as, a half hitch; a clove hitch; a timber hitch, etc. 6. <geology> A small dislocation of a bed or vein. Source: Websters Dictionary (01 Mar 1998) |
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| greater psoas muscle | <anatomy, muscle> Origin, bodies of vertebrae and intervertebral disks from the twelfth thoracic to the fifth lumbar, and transverse processes of the lumbar vertebrae; insertion, forms a common insertion with iliacus muscle into lesser trochanter of femur; action, flexes hip joint; nerve supply, lumbar plexus (ventral rami of first, second and usually third lumbar spinal nerves). Synonym: musculus psoas major, greater psoas muscle. (05 Mar 2000) |
| musculus psoas major | <anatomy, muscle> Origin, bodies of vertebrae and intervertebral disks from the twelfth thoracic to the fifth lumbar, and transverse processes of the lumbar vertebrae; insertion, forms a common insertion with iliacus muscle into lesser trochanter of femur; action, flexes hip joint; nerve supply, lumbar plexus (ventral rami of first, second and usually third lumbar spinal nerves). Synonym: musculus psoas major, greater psoas muscle. (05 Mar 2000) |
| musculus psoas minor | <anatomy> An inconstant muscle, absent in about 40%; origin, bodies of twelfth thoracic and first lumbar vertebrae and disk between them; insertion, iliopubic eminence via iliopectineal arch (iliac fascia); action, assists in flexion of lumbar spine; nerve supply, lumbar plexus. Synonym: musculus psoas minor, smaller psoas muscle. (05 Mar 2000) |
| psoas | <anatomy> An internal muscle arising from the lumbar vertebrae 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 iliopsoas. Origin: Gr. A muscle of the loin: cf. F. Psoas. Source: Websters Dictionary (01 Mar 1998) |
| psoas abscess | Abscess of the psoas muscle resulting usually from disease of the lumbar vertebrae, with the pus descending into the muscle sheath. The infection is most commonly tuberculous or staphylococcal. (12 Dec 1998) |
| psoas major | <anatomy, muscle> Origin, bodies of vertebrae and intervertebral disks from the twelfth thoracic to the fifth lumbar, and transverse processes of the lumbar vertebrae; insertion, forms a common insertion with iliacus muscle into lesser trochanter of femur; action, flexes hip joint; nerve supply, lumbar plexus (ventral rami of first, second and usually third lumbar spinal nerves). Synonym: musculus psoas major, greater psoas muscle. (05 Mar 2000) |
| psoas margin | In abdominal radiography, the appearance of the fat stripe delineating the lateral margin of the psoas muscle shadow; shows a normal retroperitoneum when visible. (05 Mar 2000) |
| psoas minor muscle | <anatomy> An inconstant muscle, absent in about 40%; origin, bodies of twelfth thoracic and first lumbar vertebrae and disk between them; insertion, iliopubic eminence via iliopectineal arch (iliac fascia); action, assists in flexion of lumbar spine; nerve supply, lumbar plexus. Synonym: musculus psoas minor, smaller psoas muscle. (05 Mar 2000) |
| psoas muscles | A powerful flexor of the thigh at the hip joint (psoas major) and a weak flexor of the trunk and lumbar spinal column (psoas minor). Psoas is derived from the greek "psoa", the plural meaning "muscles of the loin". It is a common site of infection manifesting as abscess (psoas abscess). The psoas muscles and their fibres are also used frequently in experiments in muscle physiology. (12 Dec 1998) |
| smaller psoas muscle | <anatomy> An inconstant muscle, absent in about 40%; origin, bodies of twelfth thoracic and first lumbar vertebrae and disk between them; insertion, iliopubic eminence via iliopectineal arch (iliac fascia); action, assists in flexion of lumbar spine; nerve supply, lumbar plexus. Synonym: musculus psoas minor, smaller psoas muscle. (05 Mar 2000) |
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