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Byju's Answer
Standard XII
Biology
Layers of Blood Vessels
In the given ...
Question
In the given diagram of blood circulatory system, the labelled parts a, b, c and d are
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Solution
Pulmonary veins are blood vessels that carry oxygen-rich blood from your lungs to your heart.
The pulmonary arteries carry deoxygeneted blood from the right side of the heart to the lungs.
The aorta is the main artery that carries blood away from your heart to the rest of your body.
Vena cavas are large veins that bring deoxygenated blood to your heart to get oxygen.
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(a) What is meant by human circulatory system? Name the organs of the circulatory system in humans.
(b) Draw a diagram of the human heart and label its parts.
(c) What is meant by the terms 'single circulation' and 'double circulation'?