Vena cava>right atrium>right ventricle>pulmonary artery>pulmonary vein>left atrium>left ventricle>aorta
human
The blood goes through the heart in the correct direction because there are a number of one-way valves in the heart chambers that blood can only pass through in the correct direction.
NO
Various valves keep the blood flowing in one direction.
Valves, allown blood through in one direction when the pressure builds up but close when pressure is applied in the opposite direction.
valves
Valves.
One directional valves keep blood in the heart flowing in the right direction. There are three valves: biscupid valve, semilunar valve and tricuspid valve. These open to let the blood flow through then close to prevent the blood flowing back in the wrong direction making the heart less efficient.
People used to think that blood could flow in any direction in the veins. William Harvey came up with evidence used to show that blood moved only in one direction through veins. He discovered that the valves in the veins permit blood to flow in one direction only. He said that blood circulates in only one direction through the body and returns to the heart.
What the person looks like through DNA tests
it depends on the type of blood vessel if we say of veins so movement is in upward direction if we say about arteries so movement is downward.
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