| quadriceps muscle of thigh | <anatomy, muscle> Origin, by four heads: rectus femoris, vastus lateralis, vastus intermedius, and vastus medialis; insertion, patella, and thence by ligamentum patellae to tuberosity of tibia; action, extends leg; flexes thigh by action of rectus femoris; nerve supply, femoral. Synonym: musculus quadriceps femoris, musculus quadriceps extensor femoris, quadriceps muscle of thigh. (05 Mar 2000) |
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| quadriceps reflex | A sudden contraction of the anterior muscles of the thigh, caused by a smart tap on the patellar tendon while the leg hangs loosely at a right angle with the thigh. Synonym: knee jerk, knee phenomenon, knee reflex, knee-jerk reflex, patellar tendon reflex, quadriceps reflex. (05 Mar 2000) |
| quadricepsplasty | A corrective surgical procedure on the quadriceps femoris. Origin: quadriceps + G. Plastos, formed (05 Mar 2000) |
| quadricipital | <anatomy> Of or pertaining to the quadriceps. Source: Websters Dictionary (01 Mar 1998) |
| quadricorn | <zoology> Any quadricornous animal. See: Quadricornous. Source: Websters Dictionary (01 Mar 1998) |
| quadricornous | <zoology> Having four horns, or hornlike organs; as, a quadricornous beetle. Origin: Quadri- + L. Cornu horn: cf. F. Quadricorne. Source: Websters Dictionary (01 Mar 1998) |
| quadricuspid | Having four cusps. Synonym: quadricuspid. (05 Mar 2000) |
| quadridentate | Having four teeth; as, a quadridentate leaf. Source: Websters Dictionary (01 Mar 1998) |
| quadridigitate | Synonym: tetradactyl. Origin: quadri-+ L. Digitus, digit (05 Mar 2000) |
| quadrifid | Divided, or deeply cleft, into four parts; as, a quadrifid perianth; a quadrifid leaf. Origin: L. Quadrifidus; quattuor four + findere to cleave: cf. F. Quadrifide. Source: Websters Dictionary (01 Mar 1998) |
| quadrifoliate | <botany> Four-leaved; having the leaves in whorls of four. Origin: Quadri- + L. Folium leaf. Source: Websters Dictionary (01 Mar 1998) |
| quadrigeminal | Four-fold. Origin: quadri-+ L. Geminus, twin (05 Mar 2000) |
| quadrigeminal bodies | See: inferior colliculus, superior colliculus. Synonym: corpora quadrigemina. (05 Mar 2000) |
| quadrigeminal lamina | The roofplate of the mesencephalon formed by the quadrigeminal bodies. Synonym: lamina tecti mesencephali, tectum mesencephali, lamina quadrigemina, quadrigeminal lamina, quadrigeminal plate. (05 Mar 2000) |
| quadrigeminal plate | The roofplate of the mesencephalon formed by the quadrigeminal bodies. Synonym: lamina tecti mesencephali, tectum mesencephali, lamina quadrigemina, quadrigeminal lamina, quadrigeminal plate. (05 Mar 2000) |