What's the difference between ascend and descend?

Ascend


Definition:

  • (v. i.) To move upward; to mount; to go up; to rise; -- opposed to descend.
  • (v. i.) To rise, in a figurative sense; to proceed from an inferior to a superior degree, from mean to noble objects, from particulars to generals, from modern to ancient times, from one note to another more acute, etc.; as, our inquiries ascend to the remotest antiquity; to ascend to our first progenitor.
  • (v. t.) To go or move upward upon or along; to climb; to mount; to go up the top of; as, to ascend a hill, a ladder, a tree, a river, a throne.

Example Sentences:

  • (1) In guinea pig ventricular myocytes, the positive contractile staircase was associated with ascending staircases of both peak systolic and end diastolic [Ca2+]i because of a cumulative increase in diastolic [Ca2+]i.
  • (2) While the heaviest anterogradely labeled ascending projections were observed to the contralateral ventral posterolateral nucleus of the thalamus, pars oralis (VPLo), efferent projections were also observed to the contralateral ventrolateral thalamic nucleus (VLc) and central lateral (CL) nucleus of the thalamic intralaminar complex, magnocellular (and to a lesser extent parvicellular) red nucleus, nucleus of Darkschewitsch, zona incerta, nucleus of the posterior commissure, lateral intermediate layer and deep layer of the superior colliculus, dorsolateral periaqueductal gray, contralateral nucleus reticularis tegmenti pontis and basilar pontine nuclei (especially dorsal and peduncular), and dorsal (DAO) and medial (MAO) accessory olivary nuclei, ipsilateral lateral (external) cuneate nucleus (LCN) and lateral reticular nucleus (LRN), and to a lesser extent the caudal medial vestibular nucleus (MVN) and caudal nucleus prepositus hypoglossi (NPH), and dorsal medullary raphe.
  • (3) The primary afferent fibers diverge in the brainstem into a short ascending and a long descending tract.
  • (4) Ventilation-perfusion lung scans and contrast ascending venography were performed on the sixth to eighth postoperative days.
  • (5) Emergency CT showed evidence of pericardial effusion suggesting hemopericardium, enlargement of the ascending aorta and a peripheral semilunar filling defect which caused a slight deformation of the true channel.
  • (6) The organisms are transmitted transovarially, diaplacentally, via endometrium, before or after implantation, via amnion or by the semen when ascending through the infectious environment.
  • (7) Thus, the carotid pulse tracing provides an accurate reproduction of the morphology of the pressure tracing recorded from the ascending aorta, and when calibrated by peripheral blood pressure measurement, it can be used to calculate LV pressure throughout ejection.
  • (8) Piretanide blocks the Na+ 2Cl- K+ cotransporter protein in the thick ascending limb (TAL) of the loop of Henle reversibly.
  • (9) High levels of both enzymes were reached noticeably earlier during development in PCT and PST than in medullary thick ascending limb, which emphasizes metabolic heterogeneity of developing rat kidney nephron.
  • (10) This study demonstrates the termination of ascending tract of Deiters' (ATD) axons on ipsilateral medial rectus (MR) motoneurons.
  • (11) To estimate model parameters (load and tube compliances, tube inertances, characteristic impedances, and peripheral resistances) we measured ascending aortic pressure and flow in a group of five open-chest, anesthetized dogs.
  • (12) To explore relations between preload, afterload, and stroke volume (SV) in the fetal left ventricle, we instrumented 126-129 days gestation fetal lambs with ascending aortic electromagnetic flow transducers, vascular catheters, and inflatable occluders around the aortic isthmus (n = 8) or descending aorta (n = 7).
  • (13) We studied DNA (mtDNA) replication in adult female rat hearts undergoing hypertrophy secondary to constriction of the ascending aorta.
  • (14) In one horse, the superior aspect of the right ascending ramus of the lower jaw below the coronoid process revealed a gunshot wound; the other skeletons showed no evidence of trauma.
  • (15) The problem for Labour is that, to mount an effective challenge to the ascendant Conservative party, they must first come to some agreement about why they are losing.
  • (16) Numerous CA fibers which are first observed at the level of the preoptic area, ascend through the central zone of the telencephalon and arborize profusely particularly within the medial zone of area dorsalis telencephali.
  • (17) Between March 1986 and September 1988, 38 patients underwent extended aortic resection (aortic valve, ascending aorta, and arch) for acute type-A aortic dissection with aortic valve insufficiency; deep hypothermia and circulatory arrest were used.
  • (18) For the management and prevention of the recurrent ascending infections long-term urinary disinfection and meticulous toilet of the external meatus are recommended.
  • (19) The spinal ascending pathways responsible for neuronal ventrobasal (VB) thalamic responses elicited by joint stimulation of the posterior paw were determined in arthritic rats used as a model of experimental pain.
  • (20) We conclude that spinal cord stimulation could modify segmental reflexes but that the effects were selective, probably dependent on the preserved segmental structures and ascending and descending pathways.

Descend


Definition:

  • (v. i.) To pass from a higher to a lower place; to move downwards; to come or go down in any way, as by falling, flowing, walking, etc.; to plunge; to fall; to incline downward; -- the opposite of ascend.
  • (v. i.) To enter mentally; to retire.
  • (v. i.) To make an attack, or incursion, as if from a vantage ground; to come suddenly and with violence; -- with on or upon.
  • (v. i.) To come down to a lower, less fortunate, humbler, less virtuous, or worse, state or station; to lower or abase one's self; as, he descended from his high estate.
  • (v. i.) To pass from the more general or important to the particular or less important matters to be considered.
  • (v. i.) To come down, as from a source, original, or stock; to be derived; to proceed by generation or by transmission; to fall or pass by inheritance; as, the beggar may descend from a prince; a crown descends to the heir.
  • (v. i.) To move toward the south, or to the southward.
  • (v. i.) To fall in pitch; to pass from a higher to a lower tone.
  • (v. t.) To go down upon or along; to pass from a higher to a lower part of; as, they descended the river in boats; to descend a ladder.

Example Sentences:

  • (1) The adjacent gauge was separated from the ischemic segment by one large nonoccluded diagonal branch of the left anterior descending artery.
  • (2) They insist this is the best way of ensuring the country does not descend into chaos before the final withdrawal of combat troops.
  • (3) The primary afferent fibers diverge in the brainstem into a short ascending and a long descending tract.
  • (4) A case of dissecting hematoma involving the left main, left anterior descending, and left circumflex coronary arteries is described in a patient who had received vigorous closed-chest cardiac resuscitation.
  • (5) Concerning the descending influences, it was found that stimulation of the anterior hypothalamus evokes depressor reactions, whereas stimulation of the posterior hypothalamus results in pressor reactions.
  • (6) Martin O’Neill spoke of his satisfaction at the Republic of Ireland’s score draw in the first leg of their Euro 2016 play-off against Bosnia-Herzegovina – and of his relief that the match was not abandoned despite the dense fog that descended in the second half and threatened to turn the game into a farce.
  • (7) This column is located ventral and lateral to the dorsolateral division of the trigeminal motor nucleus, and just medial to the descending trigeminal nerve rootlets.
  • (8) Blunt trauma to the epigastrum may result in a retroperitoneal hematoma involving the head of the pancreas and descending duodenum.
  • (9) Acute coronary angiography showed myocardial bridging and total occlusion of the left anterior descending artery in the middle one-third of its course.
  • (10) In acute experiments on 16 dogs the anterior descending branch of the left coronary artery was stenosed to produce a hypokinesia or dyskinesia of the anterior wall of the left ventricle.
  • (11) Descending neurons have opposite structural polarity, arising in the brain and terminating in segmental regions of the fused ventral ganglia.
  • (12) To perform this technique, it is necessary to expose only a longitudinal segment on the anterior aspect of the aneurysm to permit a ventriculotomy parallel to the anterior descending coronary artery 4-5 cm away.
  • (13) To explore relations between preload, afterload, and stroke volume (SV) in the fetal left ventricle, we instrumented 126-129 days gestation fetal lambs with ascending aortic electromagnetic flow transducers, vascular catheters, and inflatable occluders around the aortic isthmus (n = 8) or descending aorta (n = 7).
  • (14) A new centrifugal pump (Sarns), originally designed for ventricular assist, was successfully used in two patients during repair of traumatic pseudoaneurysm of the descending thoracic aorta.
  • (15) The special advantage of the UV-beam is that it allow to inactivate selectively of the particular elements of nuclear apparatus of living ciliates is to observe consequences of operation on distant descendants of irradiated cell.
  • (16) By LHRH treatment 36 testes (20.5%) reached the scrotum, when HCG was added in unsuccessful cases 47 other gonads (26.8%) descended.
  • (17) A Teflon cylinder was placed in the mid-left anterior descending coronary artery to create a 33% stenosis.
  • (18) The descending colon, which after the DMH treatment showed a significant increase in the levels of glycosidases, also gave rise to a larger number of adenocarcinomata than other parts of the colon.
  • (19) In work to determine whether X-radiation could be used to induce tumors of the colon in outbred Holtzman rats, a technique was devised so that only the descending colon could be irradiated with a collimated X-ray beam and tumorigenic exposures in the kilo-Roentgen range were delivered.
  • (20) At one, in the Gun and Dog pub in Leeds on Tuesday, a witness described how the meeting descended into chaos when one of the rebels smashed a glass and threatened to attack Griffin supporter Mark Collett.