Question

describe the course of circulation of blood from heart to organs and back to heart

Answer 1

Left auricle pumps blood into left ventricle . left ventricle is the thickest and strongest part of heart. This is because when left ventricle contracts it pushes blood blood to all parts of the body. The blood faces a lot of resistance from blood vessels. The left ventricle pushes blood into the main artery called aorta. The arch of aorta divides into 3parts and goes to different parts of the body. When the blood reaches the tissues as lymph. After cellular respiration wastes are produced. The veins take them back to the heart. There are 2main veins which put deoxygenated blood into right auricle . superior vena cave from head and necj and the inferior vena cave from the abdomen
The deoxygenated blood moves from the right auricle to the right ventricle. From there pulmonary artery takes it to the lungs for purification. Then the oxygenated blood from the lungs is taken back to the heart in the left auricle through the pulmonary vein. And the same cycle continues.

Answer 2

firstly heart pumps blood {deoxygenated} to lungs from where blood gets oxygenated then it again reaches to heart then heart pumps oygenated ti body then body uses oxygen and adds up co2 then deoxygenated blood reaches to heart and then again reapts this cycle