Explain the circulation of blood through lungs heart or organs
Answers
there are two atria or auricles that gets fill with blood and dump it into vein and vein dumps it to normal circulation through artery
the blood reaches the organs and deoxygenated blood is sent back to heart by veins
Blood circulation begins when the heart relaxes between heart beats. Blood then flows from both upper atrium's (left atrium and right atrium) into the two lower chambers (left and right ventricles) which then expand. Blood is then ejected (ejection phase) when the ventricles contract and pump the blood into the arteries.
Right ventricle sends blood needing oxygen to the lungs
The blood needing oxygen is pumped out of the right ventricle, through the pulmonary valve into the pulmonary artery. The pulmonary artery then divides into the right and left pulmonary arteries, carrying blood to the right and left lungs. In the lungs the blood gives up its carbon dioxide and picks up oxygen.
Oxygen-rich blood from lungs enters heart
Fresh blood full of oxygen leaves the lungs and comes back to the heart in the pulmonary veins. This oxygen-rich blood enters the left atrium — the top left chamber of the heart