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Blood Pressure
The function of the heart is to circulate blood around the body. The heart comprises of four chambers:

Right Atrium
Left Atrium
Right Ventricle
Left Ventricle
Functionally the heart comprises of two pumps:

The right atrium receives blood from the body (de-oxygenated blood) and the right ventricle pumps it into the lungs for aeration (removal of carbon dioxide and add oxygen).
The left atrium receives the oxygenated blood from the lungs and the left ventricle pumps it around the body.



Blood Pressure
The cardiac cycle (heartbeat) consists of cardiac muscle contraction (systole) and cardiac muscle relaxation (diastole).

Blood pressure represents the force (pressure) exerted by blood against the arterial walls during a cardiac cycle. Systolic blood pressure, the higher of the two pressure measurements, occurs during ventricular contraction (systole) as the heart pumps blood into the aorta.

After systole, the ventricles relax (diastole),......

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Approximate Word Count: 464
Approximate Pages: 2 (250 words per double-spaced page)

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