

11 : 



meanw hile k i-i »t up, it \\ ill be found 



is maintained ;it a height which in dcpendci 



the i>imi|) is operating, and 2 



The quicker the action of the pump and t ; her tl ■ 



lower the fall of pressure between the beal 



The physical explanation of this result is clearly that the fluid 

 the elastic tube when the wave <>f p into i' imp 



distends tin- walls of the tul • that when the pi imp 



tched elasl c n the <-"liiiim o 



and maintain the pressure We may saj that the ( 

 vessel walls store up Borne <>t' the systolic pre 

 t he blood during diastole. 



- 





Ti insiderations would lead us to ''\i t thai pati< 



find arteries Bhould exhibil a lower diastolic pressure than norma] | 

 sons, which, however, is nol usually th< 



Buffer from an increase in the resistance t<> the fl< <\ 1 in I iph- 



ery. The pressure pulse in these pati< 



On the other hand, when the vessel walls 1»< me m 



elastic, as in certain ci aneurism, the pres 



below the aneurism is distinctly less than that <>! 

 sels of i he same pal ient. 



