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Single Answer MCQ
Q-00020134

What role do capillaries play in the respiratory system during exercise?

1

They reduce oxygen exchange.

2

They supply more oxygen to tissues.

3

They eliminate carbon dioxide.

4

They decrease blood flow.

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Sandeep Chaturvedi

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Answer and Solution

Answer

B. They supply more oxygen to tissues.

Solution:

During exercise, capillaries expand and increase in number, allowing for greater oxygen supply to the muscles and improving overall oxygen exchange. Hence, the correct option is 'They supply more oxygen to tissues.'

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