During contraction of the ventricular myocardium ( systole ), the subendocardial coronary vessels ( the vessels that enter the myocardium ) are compressed due to the high intraventricular pressures.

During ventricular fibrillation, cardiac output drops to zero, and, unless remedied promptly, death usually ensues within minutes.

During ventricular systole, pressure rises in the left ventricle.

During ventricular systole, pressure rises in the left ventricle.

During left ventricular diastole, after the pressure drops in the left ventricle due to relaxation of the ventricular myocardium, the mitral valve opens, and blood travels from the left atrium to the left ventricle.

During the ventricular contraction portion of the cardiac cycle, the Purkinje fibers carry the contraction impulse from both the left and right bundle branch to the myocardium of the ventricles.

During fetal development, this shunt protects the right ventricle from pumping against the high resistance in the lungs, which can lead to right ventricular failure if the DA closes in-utero.

During ventricular diastole, the pressure in the ( left and right ) ventricles drops from the peak that it reaches in systole.

During ventricular contraction, the wave of depolarization moves from endocardial to epicardial surface.

During inspiration, intrapleural pressure decreases by up to 4 mm Hg, which distends the right atrium, allowing for faster filling from the vena cava, increasing ventricular preload, and increasing the stroke volume.

During the fifth stage, " Isovolumic ventricular relaxation ", pressure decreases, no blood enters the ventricles, the ventricles stop contracting and begin to relax, and the semilunar valves close due to the pressure of blood in the aorta.

) During the initial collapse, this pre-main-sequence star generates energy through gravitational contraction.

During a contraction, these muscles contract causing shortening of the upper segment and drawing upwards of the lower segment, in a gradual expulsive motion.

During Margaret Thatcher's contraction of the coal industry, six pits within a two mile ( 3 km ) radius of the city centre were closed between 1979 and 1983.

During vomiting the propulsion of food up the esophagus and out the mouth comes from contraction of the abdominal muscles ; peristalsis does not reverse in the esophagus.

During the 1930s, the U. S. and the rest of the world experienced a severe economic contraction that is now called the Great Depression.

* During accommodation, the parasympathetic nervous system causes constriction of the pupil and contraction of the ciliary muscle to the lens, allowing for closer vision.

During the 1980s, migratory Japanese sardine was one of the most abundant fish in the summer and the main commercial species, but the fishery collapsed and by 1993 no sardines were reported caught leading to significant economic contraction in the few settlements on the islands.

During contraction, there is a spatial reorganization of the contractile machinery to optimize force development.

During the nineties, countries like Mexico, Argentina, Malaysia, Turkey, Colombia, Indonesia, Korea and Peru all experienced boom – bust cycles with the consequent collapse in GDP, consumption, non-tradable output sector contraction, capital flow reversals, limited or costly access to capital markets and sharp real exchange rate fluctuations.

During intense muscle contraction the ion pumps that maintain homeostasis of these ions are inactivated and this ( with other ion related disruption ) causes ionic disturbances.

During the era of route contraction from 1940 to about 1975 the Franklin Avenue Shuttle, as it is now known, seemed a prime candidate for abandonment ; its physical structure had been allowed to deteriorate and its service steadily curtailed.

During the contraction the core becomes hotter and hotter until it causes the outer layers to begin fusing hydrogen and expand outwards initiating the red giant stage.

During this phase, the male urethral sphincter contracts ( so as to prevent urine from mixing with semen, and guard against retrograde ejaculation ) and muscles at the base of the penis begin a steady rhythmic contraction.

During contraction of muscle, rapidly cycling crossbridges form between activated actin and phosphorylated myosin, generating force.

During a concentric contraction, a muscle is stimulated to contract according to the sliding filament mechanism.

During an eccentric contraction, the muscle elongates while under tension due to an opposing force being greater than the force generated by the muscle.

During an eccentric contraction of the biceps muscle, the elbow starts the movement while bent and then straightens as the hand moves away from the shoulder.

During an eccentric contraction of the triceps muscle, the elbow starts the movement straight and then bends as the hand moves towards the shoulder.

During a concentric contraction, muscle fibers slide across each other, pulling the Z-lines together.

During an eccentric contraction, the filaments slide past each other the opposite way, though the actual movement of the myosin heads during an eccentric contraction is not known.

During systole, the ventricles contract, pumping blood through the body.

During expiration, the amount of blood entering the right ventricle will decrease, allowing the interventricular septum to bulge towards the right ventricle, and increased filling of the left ventricle and subsequent increased pressure generated by the left ventricle during systole.

During ventricle systole, the pressure within the chamber will increase until the valve is forced open.

During atrial systole, blood not only empties from the atria to the ventricles, but blood continues to flow uninterrupted from the veins right through the atria into the ventricles.

During atrial systole, blood flows from the atria to ventricles down the pressure gradient.

During the 1920's the Abstractionists, the German Bauhaus group of industrial designers, and the new architects all had the dream of some well ordered utopia, or welfare state, in which their neat and logical constructions might find their proper place.

During the summer he had tried to repair some of his losses at the track, and the bare trees reminded him that his pari-mutuel tickets would still be lying, like leaves, in the gutters near Belmont and Saratoga.

During that tournament alone, some 250,000 words winged their way out of Manchester.

During the month of November hardly a day passed when there was not some mention of John Brown in the Rhode Island newspapers.

The details of the setting of `` Neutral Tones '' are not, strictly speaking, metaphorical, but they combine to create a mood which is appropriate both to a dismal winter day and to the end of love, and in this way love and weather, the emotions and the elements, symbolize each other in a way that is common to many of Hardy's best poems ( `` Weathers '', `` The Darkling Thrush '', and `` During Wind and Rain '', for example ) and to some moving passages in the novels as well ( Far From The Madding Crowd is full of scenes constructed in this way ).

During the past year, these ligands have yielded some unusual five-coordinate complexes of nickel ( 2 ) and some interesting binuclear phosphorus-bridged complexes of palladium ( 2 ) ( see figure ), as well as new compounds of the well-known type Af.

During the making recently of an important Biblical film, some 40 volumes of research material and sketches not only of costumes and interiors, but of architectural developments, sports arenas, vehicles, and other paraphernalia were compiled, consulted, and complied with.

) During these years, Armenia occupied some 20 % of Azerbaijan's territory, rendering possibility of supplies from Azerbaijan an impossibility.

During the Middle Ages the word artist already existed in some countries such as Italy, but the meaning was something resembling craftsman, while the word artesan was still unknown.

During the 4th century BC, there may well have been some 250, 000 – 300, 000 people in Attica.

During the period which intervened between commencing operations at Possagno and his decease, he executed or finished some of his most striking works.

During the turn of the 20th century British Israelites carried out some excavations of the Hill of Tara in Ireland looking for the Ark of the Covenant – the Royal Society of Antiquaries of Ireland campaigned successfully to have them stopped before they destroyed the hill.

During the first half of the 19th century, some of the songs African-Americans sang also began to appear in use for shipboard tasks, i. e. as shanties.

During the Anglo-Iraqi War, some of the units located in the British Mandate of Palestine were sent to Iraq and drove Fordson armored cars.

During the Protestant Reformation, some of the municipalities converted to the new faith.

During its first two seasons, it was the number one program in the U. S. During its second season, it earned some of the highest ratings ever recorded for a half-hour sitcom.

During the Renaissance, it became a fad among some members of the privileged classes.

During the presidencies of Prieto and his two successors, Chile modernized through the construction of ports, railroads, and telegraph lines, some built by United States entrepreneur William Wheelwright.

During his tenure he experienced some criticism from within his own party for abandoning its traditional social democratic teachings and promoting a neoliberal economic model.

During the 19th century in the US, the length of canals grew from to over 4, 000, with a complex network making the Great Lakes navigable, in conjunction with Canada, although some canals were later drained and used as railroad rights-of-way.

During the depression years, rhinestones were even down-graded by some manufacturers to meet the cost of production.

During the period immediately after the death of Tiberius ' son, Drusus, Claudius was pushed by some quarters as a potential heir.

During the sixth century, some of the most significant names in the history of Irish Christianity studied at the Clonard monastery.