for each phase of the cardiac cycle ansewr:

Atrial contraction: what is happening to the atria electrically ?

depolarizing

Atrial contraction: what is happening to the ventricles electrically

resting

Atrial contraction: what is happenign with the valves

AV valves open

semilunar valves cloxed

Atrial contraction: what is happening to the movement of blood

ventricular volume increases

Atrial contraction: what happens to the pressure in the chambers

atrial pressure is greater than ventricular pressure

both low

Isovolumetric contraction: what is happenig to the atria electrically

depolarizing

Isovolumetric contraction: what is happening to the ventricles electrically

depolarizing

Isovolumetric contraction: what is happening with the valves

av and semilunar closed

Isovolumetric contraction: what is happening to the movement of blood

no change in volume

Isovolumetric contraction: what happens to the pressure in the chambers

ventricular pressure rises but is still less pressure than the great vessel

ventricular ejection: what is happening to the atria electrically

resting

ventricular ejection: what is happening to the ventricles electrically

depolarized

ventricular ejection: what is happening with the valves

semilunar valves open

av valves closed

ventricular ejection: what is happening to the movement of blood

blood is ejected into great arteries ventricular volume decreases

ventricular ejection: what happens to the pressure in the chambers

ventricular pressure is greater than pressure in arteries

isovolumetric relaxation:what is happening to the atria electrically

resting

isovolumetric relaxation: what is happening to the ventricles electrically

repolarizing

isovolumetric relaxation: what is happening with the valves

AV and semilunar valves are closed

isovolumetric relaxation:what is happening to movement of blood

no change

isovolumetric relaxation:what happens to the pressure in the chambers

ventricular pressure drops

still higher then atrial pressure

ventricular filling: what is happening to the atria electrically

resting

ventricular filling: what is happenign to the ventricles electrically

resting

ventricular filling: what is happening with the valves

Av Valves open

semilunar valves closed

ventricular filling: what is happenign to the movement of blood

blood flows into ventricles

ventricular volume increases

ventricular filling: what happens to the pressure in the chambers

atrial pressure is greater then ventricular pressure