What's the difference between distal and proximal?

Distal


Definition:

  • (a.) Remote from the point of attachment or origin; as, the distal end of a bone or muscle
  • (a.) Pertaining to that which is distal; as, the distal tuberosities of a bone.

Example Sentences:

  • (1) Local embolism, vertebral distal-stump embolism, the dynamics of hemorrhagic infarction and embolus-in-transit are briefly described.
  • (2) Muscle weakness and atrophy were most marked in the distal parts of the legs, especially in the gastrocnemius and soleus muscles, and then spread to the thighs and gluteal muscles.
  • (3) We report a series of experiments designed to determine if agents and conditions that have been reported to alter sodium reabsorption, Na-K-ATPase activity or cellular structure in the rat distal nephron might also regulate the density or affinity of binding of 3H-metolazone to the putative thiazide receptor in the distal nephron.
  • (4) The method is based on two-dimensional scanning photon absorptiometry on the distal part of the forearm.
  • (5) At the same time the duodenum can be isolated from the stomach and maintained under constant stimulus by a continual infusion at regulated pressure, volume and temperature into the distal cannula.
  • (6) From 1978 to 1983 in the Orthopedic University Clinic (Oskar-Helene-Heim, Berlin) 75 children with fractures of the distal humerus received medical treatment.
  • (7) Investigations showed that compliance is reduced in a distal to proximal direction.
  • (8) In case of isolated damage of deep flexor tendon of the II-V fingers at the level of the I zone there were made palliative operations of 12 fingers: tenodesis and arthrodesis of distal interphalangeal articulation in functionally advantageous position.
  • (9) 16 tube (usually a Baker tube) was inserted by gastrostomy and advanced distally into the colon.
  • (10) SPRs were elicited either by stimulating the reticular formation or the distal end of the median nerve.
  • (11) Conservatively treated compressed fractures of the distal radius dorsal metaphysis healed despite primarily good reduction and consequent treatment with a decrease in dorsal length.
  • (12) In conclusion, the ability of distal tubules to establish a significant pH gradient will contribute to the titration of non bicarbonate buffers, i.e., to titratable acid formation.
  • (13) A distally based posterior tibial artery adipofascial flap with skin graft was used for the reconstruction of soft tissue defects over the Achilles tendon in three cases and over the heel in three cases.
  • (14) In the case with a more distally situated VSD, the bundle branches skirted the anterior and distal walls of the defect.
  • (15) There is approximately a 25% decrease in aggregation from regions of the rib distal to the metaphyseal-growth plate junction (69%) to the region proximal to it (50%).
  • (16) The diagnosis of an arterial injury may be readily apparent, but the excellent upper-extremity collateral circulation may create palpable distal pulses despite a significant proximal arterial injury.
  • (17) The NAD-dependent enzymes (except alpha-GPDH) showed a stronger reactivity in the proximal tubules, while the NADP-dependent ones were more reactive in the thick limb of Henle's loop and distal convoluted tubules.
  • (18) Data from cases with myocardial bridges show that both fatty streaks and raised lesions are seldom observed in the region distal to myocardial bridge.
  • (19) Our results show that stenosis of about one-third of the original external diameter of the artery and vein of the pedicle in our model did not have any significant influence on the survival of the flap and ligation of the femoral artery distal to the branch to the flap did not produce any statistical difference in the viability of the flap.
  • (20) Seventy-five hands showed normal distal latency, in which cases, however, the SNCV of the ring finger was always outside the normal range, while the SNCVs of the thumb, index and middle fingers were abnormal in 64%, 80% and 92% of cases respectively.

Proximal


Definition:

  • (a.) Toward or nearest, as to a body, or center of motion of dependence; proximate.
  • (a.) Situated near the point of attachment or origin; as, the proximal part of a limb.
  • (a.) Of or pertaining to that which is proximal; as, the proximal bones of a limb. Opposed to distal.

Example Sentences:

  • (1) However, CT will be insensitive in the detection of the more cephalic proximal lesions, especially those in the brain stem, basal cisterns, and skull base.
  • (2) A total of 555 caries lesions were registered on proximal surfaces, 49.1% being primary lesions in the enamel, 21.4% primary lesions into the dentin and 29.5% secondary lesions.
  • (3) The correlates of three characteristics of familial networks (i.e., residential proximity, family affection, and family contact) were examined among a national sample of older Black Americans.
  • (4) Measurement of urinary GGT levels represents a means by which proximal tubular disease in equidae could be diagnosed in its developmental stages.
  • (5) The role of adrenergic agents in augmenting proximal tubular salt and water flux, was studied in a preparation of freshly isolated rabbit renal proximal tubular cells in suspension.
  • (6) The remaining 5 soil samples, obtained from sites that were not in close proximity to lakes, were also negative except for one that contained type B.
  • (7) Investigations showed that compliance is reduced in a distal to proximal direction.
  • (8) Axons emerge from proximal dendrites within 50 microns of the soma, and more rarely from the soma, in a tapering initial segment, commonly interrupted by one or two large swellings.
  • (9) Since the incidence of gastric cancer in our population seems to be unchanged, this may suggest a true increase in proximal gastric tumours.
  • (10) Studies were performed to characterize the determinants of proximal tubule ammonia entry (and retention) in vivo.
  • (11) Nine patients with duodenal ulcer were studied before and 2--3 months after proximal gastric vagotomy (PGV).
  • (12) There is approximately a 25% decrease in aggregation from regions of the rib distal to the metaphyseal-growth plate junction (69%) to the region proximal to it (50%).
  • (13) To selectively stain polyanionic macromolecules of growth plate cartilage and to prevent artifacts induced by aqueous fixation, proximal tibial growth plates were excised from rats, slam-frozen, and freeze-substituted in 100% methanol containing the cationic dye Alcian blue.
  • (14) The diagnosis of an arterial injury may be readily apparent, but the excellent upper-extremity collateral circulation may create palpable distal pulses despite a significant proximal arterial injury.
  • (15) The NAD-dependent enzymes (except alpha-GPDH) showed a stronger reactivity in the proximal tubules, while the NADP-dependent ones were more reactive in the thick limb of Henle's loop and distal convoluted tubules.
  • (16) In the other, the proximal fibula was excised and the epiphysis placed across the saphenous artery and vein in the groin.
  • (17) In testing the contribution of the long, curved stem to the torsional stability of uncemented prostheses by comparing it with other stems, the long, curved stem was the most stable, followed by a shorter straight stem, and a short, proximally curved stem.
  • (18) In this study, we examined renal tubular cell handling of digoxin and ouabain using LLC-PK1 cells, a model of proximal renal tubular cells.
  • (19) The surgical procedure, using a dispensable tendon, could be directly associated to the sutures of the proximal injuries of the cubital nerve as a temporary palliative.
  • (20) Hydroperoxides from arachidonic acid can decompose via this mechanism to form leukotrienes of potential biological significance and can catalyze the epoxidation of proximal carcinogens to ultimate carcinogenic metabolites.