Blood pressure in the mammalian aorta is maximum during:a)Diastole of ...
Blood Pressure in the Mammalian Aorta during Systole of the Left Ventricle
The blood pressure in the mammalian aorta is maximum during systole of the left ventricle. This is due to several factors that contribute to the rise in pressure during this phase of the cardiac cycle.
Ventricular Contraction
During systole of the left ventricle, the muscle fibers of the heart contract, squeezing blood out of the ventricle and into the aorta. This contraction creates a surge of pressure that moves the blood forward through the arterial system.
Aortic Compliance
The aorta is a highly elastic vessel that can stretch and expand in response to changes in blood flow. During systole of the left ventricle, the aorta expands to accommodate the surge of blood entering the vessel. This expansion helps to dampen the rise in pressure and distribute the blood more evenly throughout the arterial system.
Peripheral Resistance
As blood flows through the arterial system, it encounters resistance from the walls of the blood vessels. This resistance, known as peripheral resistance, increases the pressure of the blood as it moves through the system. During systole of the left ventricle, the increase in pressure is most pronounced due to the high level of resistance in the peripheral arteries.
Overall, the combination of ventricular contraction, aortic compliance, and peripheral resistance all contribute to the increase in blood pressure during systole of the left ventricle. This rise in pressure is necessary for the efficient delivery of blood and oxygen to the body's tissues and organs.
Blood pressure in the mammalian aorta is maximum during:a)Diastole of ...
Systole of the left ventricle because of the muscles of the ventricles contract which leads to a decrease in the volume and the pressure increases
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