What's the difference between overlying and underlying?

Overlying


Definition:

  • (p. pr. & vb. n.) of Overlie
  • (a.) Lying over or upon something; as, overlying rocks.

Example Sentences:

  • (1) Irradiation of the skin overlying the median nerve at the wrist in humans with a low power (1 mW; 632.5 nm) helium-neon laser produced a somatosensory evoked potential obtained at Erb's point.
  • (2) Moreover, the mucoid substances of the sensillum lymph are probably involved in water conservation, since sensilla are prone to water loss, because the overlying cuticle must be permeable to the chemical stimuli.
  • (3) These injections led to epidermal hyperplasia in areas overlying the irritant and the effect was most significant when the irritant was placed in the upper dermis.
  • (4) Eight of 47 LSNs overlying the posterior superior iliac spines (PSIS) were tender.
  • (5) We conclude that: (1) two of the previously proposed criteria for diagnosis of entrainment (fixed fusion on the surface electrocardiogram and a first postpacing interval equal to the paced cycle length) are overly restrictive criteria for definition of "entrainment" of VT, (2) analysis of endocardial recordings from the site of origin of tachycardia during attempted entrainment of VT is useful for documenting the presence of entrainment, and (3) such analysis provides a basis for the understanding of surface electrocardiographic phenomenon associated with entrainment.
  • (6) The rapidity of obtaining the results (within one hour), the complete absence of untoward reactions to the radiopharmaceuticals, the much lower frequency of subtle or indeterminate results, the ability to render useful information in the presence of moderate jaundice and the lack of interference from overlying intestinal contents establishes these radionuclide agents as superior to both radiographic oral and intravenous cholangiography in the investigation of the acute abdomen.
  • (7) Rather, the two participated in a clever spoof of the show’s overly serious and die-hard tone.
  • (8) At the former site the membrane overlying the bud showed an electron opaque thickening which imparted to the mature particle an asymmetrical appearance.
  • (9) An autopsy case of a 62-year-old woman with a poorly differentiated, aggressive form of adenoid squamous cell carcinoma arising in the skin overlying the right breast was studied.
  • (10) Porous polyethylene was thus better incorporated into the soft tissues than silicone rubber as long as the overlying soft tissues were not stressed by an oversized implant or inadequate soft tissue coverage.
  • (11) The interconnected central lacteals in the villi overlying the interfollicular area were connected with the lymphatic plexus in the area.
  • (12) The overally mortality in the first 24 hrs after the cardiac catheterisation for the first year of life was 1.83%.
  • (13) An overly bureaucratic approach to midwifery is not just letting mothers down – it's putting the whole profession under strain.
  • (14) In the latter case, the movement of lectin-receptor complexes occurs from membrane overlying peripheral microtubules into filament-rich pseudopods that exclude microtubules.
  • (15) Four grades of pressure can be recognized on the basis of pathophysiology of soft tissue breakdown overlying bony prominences.
  • (16) Sebum excretion rate measurements overlying an open comedone (blackhead) were significantly lower than those obtained from normal skin.
  • (17) It occurred when granular pneumocytes re-epithelialized along the luminal surface of intra-alveolar debris overlying denuded alveolar epithelial basal laminae.
  • (18) An antepartum diagnosis of vasa previa was considered in a patient in whom ultrasound revealed pulsatile loops of cord overlying the cervical os.
  • (19) A high proportion of these sebaceous tumors (69%) exhibited specifically-associated hyperplasia of the overlying epidermis.
  • (20) Histochemical methods disclose that the enzyme is originally located at the tip of the head but subsequently remains with the surface overlying the mitochondrion during translocation.

Underlying


Definition:

  • (a.) Lying under or beneath; hence, fundamental; as, the underlying strata of a locality; underlying principles.

Example Sentences:

  • (1) The resulting dose distribution is displayed using traditional 2-dimensional displays or as an isodose surface composited with underlying anatomy and the target volume.
  • (2) Because of the short detachment interval, and the absence of underlying pathology or trauma, the recovery process described here probably represents an example of optimum recovery after retinal reattachment.
  • (3) Steroids are not recommended because they may compromise defenses against an underlying disease process.
  • (4) The results obtained further knowledge of the anatomy of the nuclei, specifically the areas used for the prosthesis implantation and the underlying tissue.
  • (5) The final model has a probability 0.08 of underlying survival time being zero and, given non-zero survival time, takes the form of an exponential distribution with mean of 14.95 months.
  • (6) Certain underlying factors in several types of retinal degeneration are first discussed, followed by characteristics of diabetic maculopathy and of other types of macular degeneration including that due to aging.
  • (7) Contributing factors could include advanced age and underlying clinical or subclinical brain disease.
  • (8) In all cases, the evaluation depends on the continuous observance of the patients, taking into account any underlying primary illness (alcoholism, cerebral vascular disease, conditions following brain surgery or trauma).
  • (9) Recent rapid developments in molecular biology have started to clarify the underlying pathophysiology of various neurological diseases.
  • (10) The aim of this study was clarify the physiopathological mechanisms underlying atrial pauses as well as to evaluate the sensitivity of sinoatrial conduction time (SACT) directly measured on SNE and of SACT estimated with the indirect Strauss method with respect to the detection of SSS.
  • (11) The second has various underlying diseases, such as chronic hypertension or renal disease, etc..
  • (12) Skeletal muscle mtDNA of three patients with mitochondrial encephalomyopathy, characterized clinically by myoclonic epilepsy and ragged-red fiber (MERRF) syndrome, has been sequenced to determine the underlying molecular defect(s).
  • (13) Alveoli underlying the plasma membrane sometimes contain binding sites, particularly on their outer membranes.
  • (14) Predictions were comparatively poor for the underlying disorder category (10%).
  • (15) Both IGF-I and growth hormone have the potential to improve muscle mass and function in patients who are catabolic due to the severity of their underlying disease state.
  • (16) The mechanisms underlying the three types of Cd effects on the frog skin were discussed in relation to the Na, K-ATPase activity.
  • (17) The median age of patients with bacteremia of unknown origin was 65 years, and their most common underlying disorders were solid malignancy (28% of patients) and diabetes mellitus (18%).
  • (18) We postulate that an abnormality in retinal dopaminergic neurons, which are known to reduce light responsiveness of horizontal and ganglion cells, is the underlying pathophysiology of this clinical finding.
  • (19) The development of renal insufficiency during enalapril therapy may be exacerbated by concomitant diuretic therapy and should raise the suspicion of underlying transplant renal-artery stenosis.
  • (20) In each case the finding of anti-neutrophil cytoplasm antibodies (ANCA) strongly suggested an underlying vasculitic pathology, Wegener's granulomatosis.

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