Blood pressure is the force exerted by circulating blood against the walls of blood vessels, particularly the arteries. It is an essential measure of cardiovascular health and is expressed in terms of two readings: 1. **Systolic Pressure**: This is the higher number and represents the pressure in the arteries when the heart beats and pumps blood. 2. **Diastolic Pressure**: This is the lower number and indicates the pressure in the arteries when the heart is at rest between beats.
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