Select all the statements that are true during the filling phase of the cardiac cycle.
O Isovolumetric contraction
O Ventricular Systole
O Atria pressure is greater than ventricular pressure
O Ventricular pressure is greater than aortic pressure
O Ventricles are contracting
O The AV valves are open
O All valves are closed
O Ventricular Diastole
O Aortic Valve is open

Atrial pressure is greater than ventricular pressure.

The av valves are open

Ventricular diastole

Explanation:

The filling phase occurs during diastole and it has four stages and they are;

Isovolumetric relaxation: this phase start when aortic valve and mitral valve are closed. It uses energy for it to relax.

Rapid filling: this occur when the atrial pressure is greater than ventricular pressure. The mitral valve open and allow blood to flow to left ventricle.

Slow filling: occurs when the left ventricular pressure approach atrial pressure, there by contributing to 5% diastolic volume.

Atrial systole: the left ventricular volume is delivered as the aorta contracts.

sand 60

clay 10

silt 30

sandy loam should be dominated by the sand. as the amount of sand increased, the amount of slit needed to anchor the plants' roots to the sand will also be increased. even though the amount is very little, 10% part of clay is still necessary for proper oxidation.

answer: 21

step-by-step explanation:

divide 630 by 30. 30 goes into 630 21 times