Question

select the correct word in each sentence to make it correct.

1. when atrial pressure is greater than ventricular pressure, the click to select valves open.
2. when ventricular pressure rises above atrial pressure, the blood in the ventricle pushes the av valves click to select.
3. in the sl valves, when the pressure in the click to select is greater than the pressure in the arteries, the sl valves are forced open.
4. when ventricular pressure is lower than click to select pressure, arterial blood holds the sl valves closed.

Explanation:

1. When atrial pressure is greater than ventricular pressure, the atrioventricular (AV) valves open to allow blood to flow from the atria to the ventricles.
2. When ventricular pressure rises above atrial pressure, the blood in the ventricle pushes the AV valves closed to prevent back - flow of blood into the atria.
3. In the SL (semilunar) valves, when the pressure in the ventricles is greater than the pressure in the arteries, the SL valves are forced open to allow blood to be ejected from the ventricles into the arteries.
4. When ventricular pressure is lower than arterial pressure, arterial blood holds the SL valves closed to prevent back - flow of blood from the arteries into the ventricles.

Answer:

1. AV
2. closed
3. ventricles
4. arterial