Why is human circulation said to be double circulation?
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Answer:
The human circulatory system has three key components: blood vessels, blood and the heart. It is called a double circulatory system because blood passes through the heart twice per circuit.
The right pump sends deoxygenated blood to the lungs where it becomes oxygenated and returns back to the heart.
The left pump sends the newly oxygenated blood around the body. By the time this blood returns to the heart, it has returned to a deoxygenated state.
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TRUE
Explanation:
as we know there are two auricles and ventricles which prevent the mixing of oxygenated and deoxygenated blood.
this this is because blood goes to the heart twice in one cycle that
- oxygenated blood comes from the lungs to the heart
- from the heart to the body tissues aur blood capillaries through aorta
- and then deoxygenated blood comes back from body tissues to the heart
- and finally from the heart to the lungs for purification of blood
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