![]() Oscillation vibration alternate expansion and contraction alternate approach and recession. If one drop of blood remain in the heart at every pulse, those, in many pulses, will grow to a considerable mass.Īrb. The prosperity of the neighbour kingdoms is not inferior to that of this, which, according to the pulse of states, is a great diminution of their health. Pulse is thus accounted for: when the left ventricle of the heart contracts, and throws its blood into the great artery, the blood in the artery is not only thrust forward towards the extremities, but the channel of the artery is likewise dilated because fluids, when they are pressed, press again to all sides, and their pressure is always perpendicular to the sides of the containing vessels but the coats of the artery, by any small impetus, may be distended: therefore, upon the contraction or systole of the heart, the blood from the left ventricle will not only press the blood in the artery forwards, but both together will distend the sides of the artery: when the impetus of the blood against the sides of the artery ceases that is, when the left ventricle ceases to contract, then the spiral fibres of the artery, by their natural elasticity, return again to their former state, and contract the channel of the artery, till it is again dilated by the diastole of the heart: this diastole of the artery is called its pulse, and the time the spiral fibres are returning to their natural state, is the distance between two pulses: this pulse is in all the arteries of the body at the same time for, while the blood is thrust out of the heart into the artery, the artery being full, the blood must move in all the arteries at the same time and because the arteries are conical, and the blood moves from the basis of the cone to the apex, therefore the blood must strike against the sides of the vessels, and consequently every point of the artery must be dilated at the same time that the blood is thrown out of the left ventricle of the heart and as soon as the elasticity of the spiral fibres can overcome the impetus of the blood, the arteries are again contracted: thus two causes operating alternately, the heart and fibres of the arteries, keep the blood in a continual motion: an high pulse is either vehement or strong, but if the dilatation of the artery does not rise to its usual height, it is called a low or weak pulse but if between its dilatations there passes more time than usual, it is called a slow pulse: again, if the coats of an artery feel harder than usual from any cause whatsoever, it is called an hard pulse but if by any contrary cause they are softer, then it is called a soft pulse. The motion of an artery as the blood is driven through it by the heart, and as it is perceived by the touch. Samuel Johnson's Dictionary (0.00 / 0 votes) Rate this definition:Įtymology: pulsus, Lat. ![]() "pulse waves" "a transmitter pulsed by an electronic tube" Produce or modulate (as electromagnetic waves) in the form of short bursts or pulses or cause an apparatus to produce pulses "The baby's heart was pulsating again after the surgeon massaged it" The rate at which the heart beats usually measured to obtain a quick evaluation of a person's healthĮdible seeds of various pod-bearing plants (peas or beans or lentils etc.)Įxpand and contract rhythmically beat rhythmically The rhythmic contraction and expansion of the arteries with each beat of the heart "the pulsations seemed to be coming from a star" (electronics) a sharp transient wave in the normal electrical state (or a series of such transients) Princeton's WordNet (0.00 / 0 votes) Rate this definition:
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