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Why do the coronary arteries carry a greater blood flow during ventricular diastole than they do during ventricular systole?
Because not all of the blood that is in the heart, which was brought in during diastole, is ejected during systole. There is some back flow of blood, which can't make it over the aortic arch because of lack of pressure, into the heart.
Is diastole the highest pressure in the arteries?
No, diastole is the period when a particular chamber of the heart relaxes. the highest pressure period is during systole.
During ventricular systole is ventricular pressure increasing or decreasing?
increasing! :D
Is the blood pressure in systemic arteries greatest during atrial systole or ventricular systole?
ventricular systole
When does the blood flows through the coronary artery during left ventricular systole or right ventricular systole?
Neither, theoretically the two ventricles contract simultaneously. The coronary arteries begin as two holes just above the leaflets of the aortic valve. During systole the leaflets block the coronary arteries and prevent blood flow to them. It is during diastole (of both ventricles) that blood returns to the coronary vasculature.
What is the name for Blood pressure recorded during ventricular diastole?
diastole
What is the lowest pressure that remains in the arterial system during ventricular relaxation?
this is called the diastolic pressure meaning when the heart is in diastole. The diastolic number is the bottom number in common blood pressure. i.e. in a pressure 120/80 the lowest measured pressure is 80mmHg during ventricular relaxation
Why is blood pressure highest just after a ventricular systole and lowest during ventricular diastole?
Systole is the phase during which the heart contracts resulting in the movement of blood to the peripheral parts of the body. The contractile force causes increase in the pressure of the arteries, greater than the diastole which makes it possible for the blood to reach the body.
What AV and semilunar valve positions during ventricular diastole?
The AV valve is open and the semilunar valve is closed during ventricular diastole.
What is the term used for arterial pressure during ventricular systole?
The term used for arterial pressure during ventricular systole is systolic blood pressure. It represents the maximum pressure exerted on the walls of the arteries when the heart contracts and pumps blood into the circulatory system.
What occurs when ventricular diastole takes place?
Ventricle diastole is the period during which the ventricles are relaxing. During ventricular diastole, the pressure in the (left and right) ventricles drops from the peak that it reaches in systole. When the pressure in the left ventricle drops to below the pressure in the left atrium, the mitral(bicuspid) valve opens, causing accumulated blood from the atrium to flow into the ventricles.
Which two valves are open during ventricular systole and closed during ventricular diastole?
The semi-lunar valves
Why do the coronary arteries carry a greater blood flow during ventricular diastole than they do during ventricular systole?
Because not all of the blood that is in the heart, which was brought in during diastole, is ejected during systole. There is some back flow of blood, which can't make it over the aortic arch because of lack of pressure, into the heart.
What is the normal blood pressure number for a 50 year old?
he cardiac cycle (heart beat) 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), arterial pressure declines and the heart refills with blood. The lowest pressure reached during ventricular relaxation represents the diastolic blood pressure. Normal systolic blood pressure in an adult varies between 110 and 140 mm Hg, and diastolic pressure varies between 60 and 90 mm Hg.
What accounts for the flow of blood in arteries?
The flow of blood in arteries is primarily driven by the pumping action of the heart, which generates high pressure during ventricular contraction (systole). This pressure forces blood into the arterial system, causing it to flow away from the heart. Additionally, the elasticity of arterial walls helps to maintain blood pressure and propel blood forward during diastole, when the heart relaxes. The combination of these factors ensures a continuous and regulated flow of blood throughout the body.
Recoil of muscular arteries maintains blood flow during ventricular diastole?
yes
How does venous pressure rise during 2nd heart sound?
The venous pressure increases during the second heart sound because of the increased negative pressure. 2nd heart sound heard when AV valves close,ventricular diastole
