Show MECHANISM OF THE HEART abo Work lne oi aba machino Mac iino choso whoso stoppage means death in hie human subject alic overage rapidity of of an adult mat is about ei evenly heals per minute beats arc more frequent as a rule in young ami in women ami alerc arc variations wi liin certain limits in particular IH I SODS owing to peculiarities of it would not necessarily be an abnormal sign bound iu sonic the ual frequency of alic lie arts action sixty to sixty five or from icv only five to eighty per minute As a rule the hearts action is slower and maili powerful in fully developed and muscular organizations and more rapid and in choso of slighter form in animals the range is ty five to forty five in the cold blood cil and fitly upward in alic warm blooded animals except in the case of a horse aich has a very slow heart beat only forty strokes a minute the pulsations of men and all animals differ with the sea level also the of a healthy human heart has been shown to equal alic feat of rais ing bac tons four hundred weight one foot per hour or tons in twenty four hours tho of this under alcohol in varying quantities is often very great A curious calculation has been bojdo by dr richardson giving the work of alic heart iii mileage arc hat alic blood was thrown out of the heart st each pulsation in the the proportion of sixty nine strokes per minute and at ho as force of nine feel the mileage of the blood through the body might bo taken at yards per even miles per hour miles per day miles in a lifetime of 81 years the number of beats of tho heart in the annie would reach the crand total of ical world |