Question

trace flow of blood in human circulatory system

Answer 1

firstly all deoxygenated blood collects and reaches to the right atrium through superior vena cava and inferior vena cava.than, blood reaches to the right ventricle from the right atrium through tricuspid valve.now, tricuspid valve got close to prevent the backflow of the blood.now,all deoxygenated blood reaches to the lungs from the right ventricle through the pulmonary artery.in lungs purification or oxygenation of the blood takes place than blood reaches to the left atrium from l!ungs through the one pair of pulmonary vein.now blood reaches to the left ventriclefrom left atrium through the bi cuspid valve or mitral valve and from left ventricle blood is pumped out to the whole body through the dorsal aorta and again deoxygenated blood collected from the all body organs and reaches to right atrium through superior and inferior vena cava.