The atria
Actually, it is the contractions (squeezing) of the ventricles (the lower parts of the heart), not the atria (the upper parts), that do the pumping. That's why the lower part of the heart is larger, and the muscular walls are thicker.
The atria receive the blood from the body and pump it down into the ventricles.
the heart beats which allows the blood to spread around your body.
blood pressure
Systolic pressure
The heart pump. :)
systole
Yes it does.
Diastolic pressure
they are in the arteries
The ventricles contract and force the blood under pressure, past the semi lunar valves into the arteries. The closing of the bicuspid and tricuspid valves prevents back flow. At the same time the atria and ventricles relax and blood begins to flow back into them from the veins.
No such thingBlood pressure (BP) is the pressure (force per unit area) exerted by circulating blood on the walls of blood vessels, and constitutes one of the principal vital signs. The pressure of the circulating blood decreases as it moves away from the heart through arteries and capillaries, and toward the heart through veins.
systole
Yes it does.
Blood Pressure: The force at which blood flows through the arteries in the body. Systolic: Refers to the pressure on the arteries as the heart contracts (squeezes). Diastolic: Refers to the pressure on the vessels as the heart relaxes.
Diastolic pressure
The upper Blood Pressure Number is the Systolic, Which is the force of blood in your arteries when you heart beats.
Much lower... because arterial walls get their pressure via force of the left ventricle pumping into the arteries. Veins are not exposed to such force and get their pressure via muscle pumps.Much lower... because arterial walls get their pressure via force of the left ventricle pumping into the arteries. Veins are not exposed to such force and get their pressure via muscle pumps.
right
Pressure is the force exerted on an object divided by the area where the pressure was applied.
Pressure depends on the quantity of force exerted and the area over which the force is exerted
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Pressure
gravitational force is exerted on heavenly bodies