___ is an instrument used to measure blood pressure.
A sphygmomanometer is an instrument used to measure blood pressure.
∙ Blood pressure is the pressure exerted by blood on arterial walls.
∙ Systole- the phase when the heart pumps blood out into the aorta.
∙ Diastole - the resting period when the heart refills with blood.
During each heartbeat, blood pressure is raised to the systolic level and between beats, it drops to the diastolic level.