Atrial contraction Right Side: Blood flows from your right atrium into your right ventricle through the open tricuspid valve. When the ventricles are full, the tricuspid valve shuts. This prevents blood from flowing backward into the atria while the ventricles contract (squeeze).
Left Side: Blood flows from your left atrium into your left ventricle through the open mitral valve. When the ventricles are full, the mitral valve shuts. This prevents blood from flowing backward into the atria while the ventricles contract (squeeze).
Ventricular contraction Right Side:Blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs.
Left Side: Blood leaves the heart through the aortic valve, into the aorta and to the body. This pattern is repeated, causing blood to flow continuously to the heart, lungs and body
1 year ago
Last edited at 10:12AM on 12/7/2012
YUMMY oxygen-poor blood enters heart from inferior and superior vena cava to the right atrium. when atrium is full of blood it contracts and pushes blood to the right ventricle. after ventricle gets full the tricuspid valve shuts so blood won't go back to the atrium that's when the first sound of heart is heard. then ventricle contracts and blood leaves heart and goes to pulmonary artery to go to the lungs and become oxygen-rich(i can explain how if you want but it's irrelevant to your question) YUMMY oxygen-rich blood comes back to the left atrium and just like the right side finally ends up in the left ventricle. when ventricle contracts blood goes into aortic valve and it's pumped to the whole body.