here's the explanation
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Explanation: Oxygen, When you inhale oxygen the air travels through your breathing point and goes to the heart and it converts it to a like a deoxygenated blood that travels through your veins all over your body
Blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs. 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.
Blood flows with the help of our heart and our veins
Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium. The pulmonary vein empties oxygen-rich blood, from the lungs into the left atrium.
Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium. As the atrium contracts, blood flows from your right atrium into your right ventricle through the open tricuspid valve
blood always flows in only one direction inside the heart.
because of the blood cells that comes from the body
As the heart pumps, blood is pushed through the body through the entire circulatory system.
Oxygenated blood is is pumped away from the heart to the rest of the body, while deoxygenated blood is pumped to the lungs where it is reoxygenated before returning to the heart