(v. t.) To throw out suddenly and swiftly, as if a dart; to dart; to eject.
(v. t.) To throw out, as an exclamation; to utter by a brief and sudden impulse; as, to ejaculate a prayer.
(v. i.) To utter ejaculations; to make short and hasty exclamations.
Example Sentences:
(1) A study revealed that the percentage of active sperm in semen 30 seconds after ejaculation was 10.3% when a nonoxynol 9 latex condom was used as opposed to 55.9% in a nonspermicidal condom.
(2) Local application of 8-OH-DPAT (0-5 micrograms) into the median raphe nucleus, facilitated male rat sexual behavior, as evidenced by a decrease in number of intromissions preceding ejaculation and in time to ejaculation.
(3) The sensitivity of ejaculated spermatozoa to ouabain (in inhibitor of Na+-K+ ATPase) was determined on 4 consecutive weeks in November, March-April, and July-August.
(4) One ejaculation followed by daily contact with soiled bedding taken from a male's cage did not increase pregnancy rates.
(5) The time of sperm penetration in the mouse eggs, however, was delayed for one-half to one hour when ejaculated sperm were used.
(6) The hymen was not penetrated as a result of intromission and therefore the site of ejaculation would have been in the urogenital canal of the 4 primigravid elephants.
(7) For each ejaculate the ratio of X- and Y-bearing sperm was analysed before and after sephadex filtration using three different methodologies: sperm chromosome analysis after fusion of human sperm with hamster oocytes, deoxyribonucleic acid analysis using the Y-preferential probe pS4 and the fluorescent Y-body test.
(8) Two ejaculates were harvested by electroejaculation on each of 3 d per week for 14 wk from 14, 12- to 24-mo-old Holstein bulls.
(9) The group of animals with sexual disorders included boars with inferior ejaculate quality and low fertility (24 animals) and cases with disturbed sexual potency (33 boars).
(10) A multicenter study of electro-ejaculation is currently in process in the USA, but as these are limited experiments, the preliminary results do not permit to draw any conclusion.
(11) Relaxin in seminal fluid was determined radioimmunologically in 238 andrological patients with various ejaculate qualities.
(12) Malnourished male rats ejaculated less frequently than controls in tests with sexually receptive female rats but this difference disappeared with repeated testing.
(13) The impulse installment of chemoluminescence increased during the time of storage of the ejaculate.
(14) Sperm progression into the filter reflected the motility of the ejaculate.
(15) Out of the 2550 ejaculates taken from 42 breeding bulls within 12 months, 685, i.e.
(16) Among 124 cases with premature ejaculation, 13 (10%) mild HPRL were found.
(17) On the other hand, the values of the instantaneous frequency, duration, and rhythmicity of the copulatory thrusting movements performed during mounts, intromissions or ejaculations did not differ significantly from the values obtained under saline treatment.
(18) After standardized observation of mating behavior culminating in ejaculation and a sperm plug, females were allowed to produce litters in undisturbed conditions.
(19) The technical strategies to yield higher density of progressively motile sperm were found to be centrifugal concentration of the sperm from whole ejaculate prior to the swimming down, and subsequent re-centrifugation of the separated sperm after the swimming down.
(20) The addition of 19-hydroxy prostaglandin (PG) E to ejaculates positively stimulated sperm motility and sperm penetration capacity.
Ejection
Definition:
(n.) The act of ejecting or casting out; discharge; expulsion; evacuation.
(n.) The act or process of discharging anything from the body, particularly the excretions.
(n.) The state of being ejected or cast out; dispossession; banishment.
Example Sentences:
(1) However, ejection fraction or VCF were higher in patients with a reduction of compliance than in patients with an increase of compliance.
(2) An "overshoot" elevation of ejection fraction above resting levels was demonstrated following termination of exercise in most patients.
(3) In both the normals and the patients, plasma ANP was inversely and significantly correlated with ejection fraction during exercise (r = -0.46, p less than 0.05, n = 21), however, not at rest.
(4) The detergent lauryl maltoside abolishes respiratory control and proton ejection by cytochrome c oxidase-containing proteoliposomes over a narrow concentration range.
(5) Ejection fraction, %deltaD, and Vcf by LAO cineangiograms and echo were uniformly higher than corresponding measurements from RAO angio, and were often normal in the presence of other indicators of significant left ventricular dysfunction.
(6) A relation between ejection fraction (EF) and the echo minor dimension measurements in end diastole and end systole was formulated, which permitted estimation of the EF from the echo measurements.
(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) Combined clinical observations, stroke volume measured by impedance cardiography, and ejection fractions calculated from systolic time intervals, all showed significant improvement in parallel with CoQ10 administration.
(9) Changes in contractility were correlated with severity of disease, as defined by New York Heart Association class, dose of diuretics, left ventricular ejection fraction and left ventricular end-diastolic pressure.
(10) One or more of the followin factors were present in the "high-risk" group: ventricular dysfunction--ejection fraction less than 0.4, preinfarction angina, evolving infarction, recent infarction (less than 2 weeks), and refractory ventricular tachyarrhythmia.
(11) The LV end-diastolic and end-systolic volumes (EDVI, ESVI), and ejection fraction in the subsequent cardiac cycle were calculated.
(12) The correlation coefficients between tests 1 and 2 were 0.92 for both the pre- and postexercise ejection fractions and 0.98 for both the pre- and postexercise wall motion scores.
(13) Combining these approaches, additionally including a low ejection fraction, subgroups of patients at very high risk of sudden death or sustained ventricular tachyarrhythmia can be identified.
(14) To validate the repeated use of radionuclide equilibrium angiography for determining left ventricular (LV) ejection fraction (EF) and end-diastolic and end-systolic volumes (EDV and ESV), 25 patients were studied on an hourly basis an average of 9.1 days after acute myocardial infarction.
(15) When an exercise test is not performed, a resting radionuclide left ventricular ejection fraction is recommended, and coronary angiography is considered if the value lies between 0.20 and 0.44 (12% 1-year mortality).
(16) It was concluded that 1) late ejection was quantitatively important to LV pumping, 2) behavior during late ejection was inconsistent with E(t)-R, and 3) ad hoc modification of E(t)-R models was not likely to yield LV pumping models that could satisfactorily reproduce instantaneous P(t) and Q(t) behavior over the entire ejection period.
(17) The results showed that the shortening fractions and ejection fractions were significantly depressed in the experimental embryos.
(18) Global left ventricular ejection fraction (LVEF) was obtained by radionuclide angiography and analyzed with an automatic detection program.
(19) Thus, patients are likely to live longer after CABG if they have left main disease; three-vessel disease with left ventricular dysfunction (ejection fraction less than 50%), class III or IV angina, provocable ischemia, or disease in the proximal left anterior descending coronary artery; two-vessel disease with proximal left anterior descending artery involvement; and two-vessel disease with class III or IV angina as well as either severe left ventricular dysfunction alone or moderate left ventricular dysfunction together with at least one proximal lesion.
(20) The maintenance of adequate blood circulation requires a sufficient ventricular contractility; in addition, to eject blood, the ventricles must first receive a sufficient volume, requiring a low diastolic stiffness.