(n.) The act of percussing, or striking one body against another; forcible collision, esp. such as gives a sound or report.
(n.) Hence: The effect of violent collision; vibratory shock; impression of sound on the ear.
(n.) The act of tapping or striking the surface of the body in order to learn the condition of the parts beneath by the sound emitted or the sensation imparted to the fingers. Percussion is said to be immediate if the blow is directly upon the body; if some interventing substance, as a pleximeter, is, used, it is called mediate.
Example Sentences:
(1) The results of the Tinel percussion test, the Phalen wrist-flexion test, and the new test were evaluated in thirty-one patients (forty-six hands) in whom the presence of carpal tunnel syndrome had been proved electrodiagnostically, as well as in a control group of fifty subjects.
(2) It imitates the conventional percussion massage of the thorax by introducing high-frequency gas oscillations (300 impulses per minute) into the tracheobronchial system.
(3) The effect of manual percussion of the thorax in nine patients with stable chronic airflow obstruction and excessive tracheobronchial secretion has been studied.
(4) In seven patients with severe respiratory distress, conventional mechanical ventilation and PEEP were used initially for respiratory support, which was changed to high-frequency percussive ventilation (HFPV) at the same level of airway pressure and FIO2.
(5) The effect of indomethacin administration on the mortality rate of brain-injured rats was studied in four groups of animals subjected to a level of injury with a fluid-percussion apparatus predetermined to cause 50% mortality (50% lethal dose, or LD50).
(6) This study presents a new device for producing experimental, concussive head injury together with a detailed description of biomechanical features of fluid percussion brain injury in the cat.
(7) A newer technique, ausculatory percussion, has been reported as having a far higher sensitivity.
(8) Sheep fail to demonstrate changes in any of these variables after severe percussive wave brain trauma.
(9) Beneficial effects for opiate receptor antagonists have also been observed after fluid percussion head injury in cats.
(10) The chi-square results indicated that the peptostreptococcus were significantly related to apical radiolucency and B. melaninogenicus were significantly related to percussion or foul smell.
(11) These data demonstrate that fluid percussion injury in the rat reproduces many of the features of head injury observed in other models and species.
(12) Facebook Twitter Pinterest SprungDigi crew member creating percussion sounds for MusicMix.
(13) The subcutaneous thickening, the tenderness on compression and percussion of the hypothenar eminence or Raynaud's phenomenon of the last fingers should arise the suspicion of this syndrome, which will be confirmed by a positive Allen's test, Doppler examination or digitalized angiography.
(14) Bladder percussion produced contraction of the wall of the bladder and this was regularly associated with increased arterial mean and pulse pressures, a decreased heart rate and calf and hand blood flow, and venoconstriction.
(15) 10 out of 26 cases of pneumothorax could be suspected by percussion dullness.
(16) 31P magnetic resonance spectroscopy was used to determine the intracellular free Mg2+ concentration prior to and following fluid percussion induced traumatic brain injury in rats.
(17) This model employs the same fluid percussion device commonly used in in vivo brain injury studies.
(18) The fluid percussion device was attached over the right parietal cortex and a moderate (2.0 atm) intensity injury was produced.
(19) Neurological examinations revealed that she had facial diplegia, inverted V-shaped mouth, high-arched palate, talipes equinus, percussion myotonia of the tongue, generalized muscular atrophy and weakness, lordosis, areflexia, and congenital cataracta.
(20) The visco-elastic properties of a healthy tooth enabling the percussion of the Periotest tapping head to be decelerated in less than 1 ms are largely lost in periodontitis.
Rudiment
Definition:
(n.) That which is unformed or undeveloped; the principle which lies at the bottom of any development; an unfinished beginning.
(n.) Hence, an element or first principle of any art or science; a beginning of any knowledge; a first step.
(n.) An imperfect organ or part, or one which is never developed.
(v. t.) To furnish with first principles or rules; to insrtuct in the rudiments.
Example Sentences:
(1) The final pattern can thus be related to the cytoplasmic organization of the rudiment.
(2) In contrast, rudiments of internal organs provided their own contingent of endothelial precursors, a process termed vasculogenesis.
(3) Chondrogenesis and osteogenesis of the os penis were caused by androgens, while the rudiments of the os penis were formed independently of androgens.
(4) Results differed according to the germ-layer constitution of the grafted rudiments.
(5) Matrix volume increase accounted for almost 60% of the overall rudiment increase.
(6) This necrosis was strikingly more severe in the mandibular rudiment of the first branchial arch than in the maxillary.
(7) (2) When the transplantation reversed only the rostrocaudal axis, two days after the operation the rudiments of dorsal root ganglia were formed at the caudal (originally rostral) halves of the transplanted sclerotomes.
(8) Our results indicate that the area of hypertrophy and cartilage resorption may be established quite early in the rudiment before overt manifestation of these processes.
(9) These results indicate that 1) Engrailed-2 expression is suppressed in the most ventral neural tube owing to induction of the floor plate by the notochord, and 2) that the presence of an underlying notochord is not required for correct rostrocaudal expression, suggesting that multiple pathways act in the patterning of the rudiment of the central nervous system.
(10) Pancreas rudiments from 13-day rat embryos were cultured in the presence of dimethylnitrosamine (DMN) for up to 10 weeks.
(11) Finally, the importance of the interaction between stem cell and organ rudiment to normal thymic development is discussed in relation to the pathogenesis of thymic anomalies.
(12) Other performers on the night included award winners Goulding, Mars, Bastille and Rudimental, as well as Katy Perry, whose set resembled an Aztec scene with fluorescent dance outfits and laser beams.
(13) Complete paraffin serial sections of the heads of 14- and 15-day fetuses were cut in three planes to determine the location and shape of the earliest pouch rudiments.
(14) It has rudiments of the prefirst (Pp) and the seventh (Pm) rays.
(15) Pole cells thus formed in uv-irradiated embryos bear similarities to normal pole cells both in their morphology and their ability to migrate to the gonadal rudiments.
(16) There is a period in the development of chick adenohypophysis, which lasts five days of incubation and during which the adenohypophysis rudiment retained its capacity for lens differentiation despite the fact that it is already determined in the adenohypophysis direction.
(17) The numerical value of approximately 10(-7) cm2s-1 for D suggests that retinoids are not freely diffusible in the limb rudiment, but interact with the previously identified cellular retinoic acid binding protein.
(18) The epithelium seems to be necessary for the process of rudiment formation of the os penis and the corpus cavernosum penis.
(19) Particular identified circular and longitudinal muscle fibers, visualized by indirect immunofluorescence using a monoclonal antibody against leech muscle, outline the presumptive ganglionic territories even before the ganglionic rudiments become morphologically distinct and serve as anatomical landmarks to which the cell movements are related.
(20) Among five efts of the smallest size (26.54 plus or minus 2.20 mm snout-to-vent length), and displaying bright orange dorsal skin coloration, all carpal rudiments were cartilaginous.