| quantum rectum | See: Q.R. Origin: L. However much is correct (05 Mar 2000) |
|---|
| ampulla of rectum | A dilated portion of the rectum just above the anal canal. Synonym: ampulla recti, ampulla of rectum. (05 Mar 2000) |
|---|---|
| benign lymphoma of the rectum | A rectal polyp composed of lymphoid tissue with follicle formation, covered by mucosa. (05 Mar 2000) |
| rectum | <anatomy> The last portion of the large intestine (colon) that communicates with the sigmoid colon above and the anus below. (27 Sep 1997) |
| 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) |
| per rectum | By or through the rectum, denoting a method of medication. Origin: L. (05 Mar 2000) |
| muscular coat of rectum | Muscular layer of the wall of the rectum. Synonym: tunica muscularis recti. (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) |
| intestinum rectum | Straight intestine. See: rectum. (05 Mar 2000) |
| lymphatic follicles of rectum | Scattered collections of lymphoid tissue in the wall of the rectum. Synonym: lymphatic follicles of rectum. (05 Mar 2000) |
| quantum | <unit> The fundamental unit of electromagnetic energy. (09 Oct 1997) |
| quantum efficiency | The number of photons required for the formation of one oxygen molecule in photosynthesis. Varies from 8-14 depending on the system used to measure it. (18 Nov 1997) |
| quantum evolution | An extremely rapid evolutionarychange in a single genetic lineage, thought to result from a sudden and radical change in the species'environment. (09 Oct 1997) |
| quantum limit | The shortest wavelength found in an X-ray spectrum. (05 Mar 2000) |
| quantum mottle | Mottle caused by the statistical fluctuation of the number of photons absorbed by the intensifying screens to form the light image on the film; faster screens produce more quantum mottle. (05 Mar 2000) |
| quantum requirement | The number of quanta of light absorbed required for the transformation of one molecule; the inverse of the quantum yield. (05 Mar 2000) |