| ascending paralysis | A paralysis of rapid course beginning in the legs and involving progressively the trunk, arms, and neck, ending sometimes in death in from one to three weeks. Synonym: ascending paralysis. (05 Mar 2000) |
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| ascending parietal convolution | The anterior convolution of the parietal lobe, bounded in front by the central sulcus (fissure of Rolando) and posteriorly by the interparietal sulcus. Synonym: gyrus postcentralis, ascending parietal convolution, ascending parietal gyrus, posterior central convolution, posterior central gyrus. (05 Mar 2000) |
| ascending parietal gyrus | The anterior convolution of the parietal lobe, bounded in front by the central sulcus (fissure of Rolando) and posteriorly by the interparietal sulcus. Synonym: gyrus postcentralis, ascending parietal convolution, ascending parietal gyrus, posterior central convolution, posterior central gyrus. (05 Mar 2000) |
| ascending part of aorta | The part of the aorta prior to the aortic arch from which arise the coronary arteries. Synonym: aorta ascendens, ascending part of aorta, pars ascendens aortae. (05 Mar 2000) |
| ascending part of duodenum | The terminal or fourth part of the duodenum, ascending from the horizontal part to the jejunum. Synonym: pars ascendens duodeni. (05 Mar 2000) |
| ascending pharyngeal artery | <anatomy, artery> Origin, external carotid; distribution, wall of pharynx and soft palate, posterior cranial fossa. Synonym: arteria pharyngea ascendens. (05 Mar 2000) |
| ascending pharyngeal plexus | An autonomic plexus on the artery of the same name, formed of fibres from the superior cervical ganglion. Synonym: plexus pharyngeus ascendens. (05 Mar 2000) |
| ascending posterior branch | The ascending posterior branch of the superior lobar branch of the right pulmonary artery. Synonym: ramus posterior ascendens. (05 Mar 2000) |
| ascending process | An upward extension of the embryonic pterygoquadrate cartilage; it develops into the greater wing of the sphenoid bone. Synonym: ascending process. (05 Mar 2000) |
| ascending pyelonephritis | Pyelonephritis due to bacterial infection from the lower urinary tract, particularly by reflux of infected urine. (05 Mar 2000) |
| ascending tick paralysis | <neurology> An ascending paralysis caused by the continued presence of Dermacentor and Ixodes ticks attached to the occipital or upper neck region in humans. The treatment consists of tick removal and supportive care. (27 Sep 1997) |
| ascension | 1. The act of ascending; a rising; ascent. 2. Specifically: The visible ascent of our Savior on the fortieth day after his resurrection. Also, Ascension Day. 3. An ascending or arising, as in distillation; also that which arises, as from distillation. "Vaporous ascensions from the stomach." (Sir T. Browne) Ascension Day, the Thursday but one before Whitsuntide, the day on which commemorated our Savior's ascension into heaven after his resurrection; called also Holy Thursday. <astronomy> Right ascension, an arc of the equator, intercepted between the first point of Aries and that point of the equator which rises together with a star, in an oblique sphere; or the arc of the equator intercepted between the first point of Aries and that point of the equator that comes to the horizon with a star. It is little used in modern astronomy. Origin: F. Ascension, L. Ascensio, fr. Ascendere. See Ascend. Source: Websters Dictionary (01 Mar 1998) |
| ascensional | Relating to ascension; connected with ascent; ascensive; tending upward; as, the ascensional power of a balloon. <astronomy> Ascensional difference, the difference between oblique and right ascension; used chiefly as expressing the difference between the time of the rising or setting of a body and six o'clock, or six hours from its meridian passage. Source: Websters Dictionary (01 Mar 1998) |
| ascensus | A moving upward; having an abnormally high position. Origin: L. Ascent (05 Mar 2000) |
| ascertainment | In epidemiological and genetic research, the method by which a person, pedigree, or cluster is brought to the attention of an investigator; has a bearing on the interpretation of segregation ratios, concordance rates, linkage analysis, and other probability features. (05 Mar 2000) |