What is blood pressure?

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Multiple Choice

What is blood pressure?

Explanation:
Blood pressure is the force that blood exerts on the walls of blood vessels as it circulates. This pressure peaks when the heart contracts and pushes blood into the arteries (systolic pressure) and falls between beats when the heart relaxes (diastolic pressure). It’s typically expressed in mmHg and reflects how much blood the heart pumps (cardiac output) and how much resistance the vessels offer to flow (vascular resistance). The other ideas describe different things: pressure inside the heart is intracardiac pressure, not the systemic arterial pressure; the volume of blood in arteries is blood volume, not pressure; and airflow through airways relates to breathing, not circulation.

Blood pressure is the force that blood exerts on the walls of blood vessels as it circulates. This pressure peaks when the heart contracts and pushes blood into the arteries (systolic pressure) and falls between beats when the heart relaxes (diastolic pressure). It’s typically expressed in mmHg and reflects how much blood the heart pumps (cardiac output) and how much resistance the vessels offer to flow (vascular resistance). The other ideas describe different things: pressure inside the heart is intracardiac pressure, not the systemic arterial pressure; the volume of blood in arteries is blood volume, not pressure; and airflow through airways relates to breathing, not circulation.

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