No. Most (~70%) of ventricular filling occurs passively, without atrial contraction.
ventricular systole
yes during ventricular systole AV valves are closed.
increasing! :D
I have no idea:P
The semi-lunar valves
ventricular systole
The AV valves are closed
The ventricular systole lasts for about 0.3 seconds, during which time the ventricles of the heart contract to push blood out into the arteries.
chordae tendonae
Right ventricular systole is pumping blood into the PULMONARY ARTERIES just as left ventricular systole is pumping blood into the AORTA -- both at the same time.Source: http://library.med.utah.edu/kw/pharm/hyper_heart1.htmlIn right ventricular systole, the blood enters the pulmonary trunk before proceding into the pulmonary arteries.
yes
It is called systole. This is when the ventricles contract and eject blood into the lungs (from the right ventricle) or into the systemic circulation (from left ventricle).