Changes

The arterial blood pressure is the force causing blood to flow through the arteries, into the capillaries, then back to the heart via the veins.

The arterial blood pressure is the force causing blood to flow through the arteries, into the capillaries, then back to the heart via the veins.

The left ventricle contracts (systole), ejecting blood into the aorta, creating a pressure pulse. This is the measurement known as systolic blood pressure. Part of the blood that is ejected during systole remains within the distended arteries, and rebounds during diastole (relaxation of the ventricle), creating the diastolic blood pressure. An adequate blood pressure is required for normal blood flow; however the presence of a normal arterial blood pressure does not guarantee that blood flow is normal.

The [[Heart Structure - Anatomy & Physiology|left ventricle]] contracts (systole), ejecting blood into the aorta, creating a pressure pulse. This is the measurement known as systolic blood pressure. Part of the blood that is ejected during systole remains within the distended arteries, and rebounds during diastole (relaxation of the ventricle), creating the diastolic blood pressure. An adequate blood pressure is required for normal blood flow; however the presence of a normal arterial blood pressure does not guarantee that blood flow is normal.

== Physiological Mechanisms to Maintain Normal Blood Pressure ==

== Physiological Mechanisms to Maintain Normal Blood Pressure ==