What's the difference between backward and retrograde?

Backward


Definition:

  • (adv.) Alt. of Backwards
  • (a.) Directed to the back or rear; as, backward glances.
  • (a.) Unwilling; averse; reluctant; hesitating; loath.
  • (a.) Not well advanced in learning; not quick of apprehension; dull; inapt; as, a backward child.
  • (a.) Late or behindhand; as, a backward season.
  • (a.) Not advanced in civilization; undeveloped; as, the country or region is in a backward state.
  • (a.) Already past or gone; bygone.
  • (n.) The state behind or past.
  • (v. i.) To keep back; to hinder.

Example Sentences:

  • (1) This movement generates forward and backward shearing force in the stagnation region as the separated flow migrates back and forth.
  • (2) The estimated forward (k) and backward (1) rate constants are: 2.45 x I05 M-1 s- and 0.23 x 103 s-1, respectively, for k and I for the case when the drug is trapped by both activation and inactivation gates, and 3.58 x 105 M-l s-l and 4.15 x 10-3 S-l for the case when the drug is not trapped.
  • (3) On physical examination the patients complained of pain on both passive flexion and internal rotation of the hip, and when the thigh was pushed backwards at 90 degrees of flexion.
  • (4) The effects of maxillary protracting bow appliance were the maxillary forward movement associated with counter-clockwise rotation of the nasal floor and the mandibular backward movement associated with clockwise rotation.
  • (5) Treadmill acceleration impulses were backwards or forwards directed, or their direction was inverted after 30 ms. Backwards directed impulses were followed by gastrocnemius and forwards directed ones by tibialis anterior EMG responses (latency 65-75 ms) whose duration depended on impulse duration.
  • (6) For all my enthusiasm, my family must have felt we were taking a step backwards in lifestyle.
  • (7) The response was composed of an isometric phase, during which the body weight was shifted from the stimulated limb to the opposite forelimb while the stimulated limb was gently pushed backwards, and a movement phase during which the stimulated paw actually accomplished the placing reaction.
  • (8) They’ve actually gone backwards,” Cobbett said.
  • (9) Older subjects were found to be significantly more susceptible to the backward masking effect over longer delays between the target and masking stimuli.
  • (10) Those with unstable Dunlop test responses were much more likely to be backward or low normal readers than children with stable responses.
  • (11) The effects of interval duration as well as of repeated presentation of paired stimuli on backward connections show that these factors are of considerable importance for their formation.
  • (12) They need not tilt the head backwards during inhalation or hold their breath afterwards.
  • (13) Unsurprisingly, one of the three lonely references at the end of O'Reilly's essay is to a 2012 speech entitled " Regulation: Looking Backward, Looking Forward" by Cass Sunstein , the prominent American legal scholar who is the chief theorist of the nudging state.
  • (14) Results for the backward-counting condition duplicate, for the retention intervals used, the shape of the classic Peterson and Peterson forgetting curve but indicate little loss of memory in either the rehearsal or alpha conditions.
  • (15) But we won't be taking a backwards step, not this week, not this year, or next year or ever."
  • (16) Twenty-four male graduate volunteers were administered a battery of psychological tests--critical flicker fusion (CFF; alternate and simultaneous), reaction time (simple and choice), memory (forward and backward), and associative recall--to ascertain their performance capability during the different times of day.
  • (17) We implemented a parallel version of the backward error propagation neural network training algorithm in the widely portable parallel programming language C-Linda.
  • (18) The target patterns varied in the number of line segments that they contained and were presented in the presence or absence of a backward-masking stimulus.
  • (19) We self-censure because it would put us all back, it would diminish who we are.” Of course she’s a feminist: “That just means believing that women can do everything men can but backwards in heels with a cherry on top.
  • (20) Facebook Twitter Pinterest Britain needs to talk about the R-word: racism It is also a wakeup call to those who recognise racism only when it is played out like a scene from Django Unchained , those who think that racism has to be some vulgar incident perpetrated only by the backward, ignorant and poorly educated, those who believe that racism has to be an act, rather than a complicated and intangible framework that sets up obstacles.

Retrograde


Definition:

  • (a.) Apparently moving backward, and contrary to the succession of the signs, that is, from east to west, as a planet.
  • (a.) Tending or moving backward; having a backward course; contrary; as, a retrograde motion; -- opposed to progressive.
  • (a.) Declining from a better to a worse state; as, a retrograde people; retrograde ideas, morals, etc.
  • (v. i.) To go in a retrograde direction; to move, or appear to move, backward, as a planet.
  • (v. i.) Hence, to decline from a better to a worse condition, as in morals or intelligence.

Example Sentences:

  • (1) Endoscopic retrograde cholangiography failed to demonstrate any bile ducts in the right postero-lateral segments of the liver, the "naked segment sign".
  • (2) Nonetheless, anatomical continuity was restored at the site of injury, axons projected across this region, and rostral spinal and brainstem neurons could be retrogradely labelled following HRP injections administered caudal to the lesion.
  • (3) The recorded APs were further subdivided into those exhibiting consistent antegrade conduction during sinus rhythm (overt APs: 50 left APs, eight right APs), those exhibiting intermittent antegrade conduction (intermittent APs: six left APs, two right APs), and those exhibiting only retrograde conduction (concealed APs: 33 left APs, two right APs).
  • (4) The behavior of the retrograde H deflection in respect to the first extra beat following the premature QRS complex helped in excluding bundle branch reentry.
  • (5) Diagnostic endoscopic retrograde cholangiopancreatography in patients with complicated forms of the disease helps in identifying the cause of jaundice before the operation.
  • (6) Acute cholangitis complicating diagnostic endoscopic retrograde cholangiopancreatography (ERCP) is potentially fatal.
  • (7) This report describes a newly developed catheter system with the aid of which the cystic duct and gallbladder can be reliably catheterized, retrograde, via an endoscope.
  • (8) Previous studies are reviewed in the light of new information on retrograde axonal transport, circumventricular organs, the proper use of horseradish peroxidase, freeze-fracturing, immunocytochemistry and plasma protein gene expression in the developing human brain.
  • (9) Injection of horseradish peroxidase into the rostral ventrolateral medulla (RVLM) led to heavy retrograde and anterograde labeling in the region of the hypothalamus that yielded the CRDR when stimulated electrically.
  • (10) These characteristics are consistent with the proposal that cytoplasmic dynein plays a universal role in retrograde organelle motility.
  • (11) Retrograde extrapolation is applicable in the forensic setting with scientific reliability when reasonable and justifiable assumptions are utilized.
  • (12) After injection of HRP-WGA into the contralateral hippocampus 2% of hilar NPY-i neurons were retrogradely labeled and symmetric NPY-i synapses were found on the cell bodies and dendrites of unstained HRP-WGA labeled neurons.
  • (13) Retrograde transport of horseradish peroxidase and immunocytochemical visualization of glutamate (Glu) were combined to investigate the neurotransmitter used by cortico-cortical neurons in the first (SI) and second (SII) somatic sensory areas of macaque monkeys.
  • (14) In 40 subjects the propagation sequence of phasic contractions could be evaluated and were simultaneous in 53%, antegrade in 35%, and retrograde in 11% of the waves.
  • (15) 314 patients were managed conservatively and 524 required intervention therapy: 52 with blind endoscopic techniques, 93 with open surgery, 122 with retrograde ureteroscopy, 168 with percutaneous extraction and 92 with ESWL.
  • (16) None of the cases was diagnosed by retrograde pyelography for fractionally visualized excretory urography and 3 were within 9 months of a previously normal excretory urogram alone or with retrograde pyelography.
  • (17) We examined in rats the effectiveness of administering verapamil into ischemic tissue by retrograde perfusion through the cerebral vein, starting 3 hours after occlusion of the middle cerebral artery.
  • (18) Fluorescent labels, injected into either the hindlimb muscles or the cerebellum, are retrogradely transported to motoneurones or dorsal spinocerebellar tract neurones respectively.
  • (19) Glutamate-immunoreactive neurons were present throughout the acoustic thalamus, including the regions containing the retrogradely labeled neurons.
  • (20) Injections of horseradish peroxidase into the telencephalon retrogradely labeled neurons ipsilaterally in various thalamic, preglomerular, and tuberal nuclei, the nucleus of the locus coeruleus (also contralaterally), the superior raphe, and portions of the nucleus lateralis valvulae.