Define mean arterial pressure, cardiac output, and
peripheral resistance
The heart is a muscular organ that pumps blood through the blood vessels of the circulatory system such as arteries and veins which is called the cardiovascular system. It dilates and contracts to supply blood through blood vessels in the human body. On each contraction, the human heart (adult) pumps in between 60ml to 90ml of blood. This pumped blood supplies oxygen and nutrients to the body and carries metabolic wastes such as carbon dioxide to the lungs. It is located just behind and slightly left of the breastbone and it consists of four chambers i.e right atrium, right ventricle, left atrium, and left ventricle.
The flow of blood through arteries and veins depends on some of the factors like arterial pressure, the viscosity of blood, radius and length of the blood vessel, and resistance provided by the vessel to flow blood.
Mean Arterial Pressure (MAP): The average arterial blood pressure recorded in an individual during a single cardiac cycle is defined as the mean arterial pressure (MAP). During one heartbeat it measures the flow, resistance, and pressure in arteries. The MAP is directly proportional to the cardiac output that times the peripheral resistance.
Mean arterial pressure = Diastolic pressure + 1/3 (systolic pressure - diastolic pressure)
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