write short notes on :Blood pressure and heartbeats.
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The blood pressure is the pressure of the blood within the arteries. It is produced primarily by the contraction of the heart muscle. It's measurement is recorded by two numbers. The first (systolic pressure) is measured after the heart contracts and is highest.
Heartbeat is defined as the pulse of your heart, or a single short moment, or something that acts as a unifying force. When your heart pulses and pumps blood throughout your body, this is an example of a heartbeat.
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