| flexure | 1. The act of flexing or bending; a turning or curving; flexion; hence, obsequious bowing or bending. "Will it give place to flexure and low bending?" (Shak) 2. A turn; a bend; a fold; a curve. "Varying with the flexures of the valley through which it meandered." (British Quart. Rev) 3. <zoology> The last joint, or bend, of the wing of a bird. 4. <astronomy> The small distortion of an astronomical instrument caused by the weight of its parts; the amount to be added or substracted from the observed readings of the instrument to correct them for this distortion. <mathematics> The flexure of a curve, the bending of a curve towards or from a straight line. Origin: L. Flexura. Source: Websters Dictionary (01 Mar 1998) |
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| anorectal flexure | The anteroposterior curve with convexity anteriorward of the last portion of the rectum. Synonym: flexura perinealis recti, anorectal angle, anorectal flexure. (05 Mar 2000) |
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| basicranial flexure | The dorsally concave curvature of the rhombencephalon in the embryo; appearance indicates division of rhombencephalon into myelencephalon and metencephalon. Synonym: basicranial flexure, transverse rhombencephalic flexure. (05 Mar 2000) |
| caudal flexure | The bend in the lumbosacral region of the embryo. Synonym: sacral flexure. (05 Mar 2000) |
| cephalic flexure | The sharp, ventrally concave bend in the developing midbrain of the embryo. Synonym: cerebral flexure, cranial flexure, mesencephalic flexure. (05 Mar 2000) |
| cerebral flexure | The sharp, ventrally concave bend in the developing midbrain of the embryo. Synonym: cerebral flexure, cranial flexure, mesencephalic flexure. (05 Mar 2000) |
| cervical flexure | The ventrally concave bend at the juncture of the brainstem and spinal cord in the embryo. (05 Mar 2000) |
| perineal flexure of rectum | The anteroposterior curve with convexity anteriorward of the last portion of the rectum. Synonym: flexura perinealis recti, anorectal angle, anorectal flexure. (05 Mar 2000) |
| mesencephalic flexure | The sharp, ventrally concave bend in the developing midbrain of the embryo. Synonym: cerebral flexure, cranial flexure, mesencephalic flexure. (05 Mar 2000) |
| right colic flexure | The bend of the colon at the juncture of its ascending and transverse portions. Synonym: flexura coli dextra, hepatic flexure. (05 Mar 2000) |
| pontine flexure | The dorsally concave curvature of the rhombencephalon in the embryo; appearance indicates division of rhombencephalon into myelencephalon and metencephalon. Synonym: basicranial flexure, transverse rhombencephalic flexure. (05 Mar 2000) |
| cranial flexure | The sharp, ventrally concave bend in the developing midbrain of the embryo. Synonym: cerebral flexure, cranial flexure, mesencephalic flexure. (05 Mar 2000) |
| sacral flexure | The bend in the lumbosacral region of the embryo. Synonym: sacral flexure. (05 Mar 2000) |
| sacral flexure of rectum | The anteroposterior curve with concavity anteriorward of the first portion of the rectum. Synonym: flexura sacralis recti. (05 Mar 2000) |
| hepatic flexure | The bend of the colon at the juncture of its ascending and transverse portions. Synonym: flexura coli dextra, hepatic flexure. (05 Mar 2000) |
| sigmoid flexure | <anatomy> The portion of the colon that connects to the descending colon above and the rectum below. (27 Sep 1997) |