If the radius of blood vessels of a person decreases his/her blood pressure will
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the correct answer is increase
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ANSWER:
If the radius of 'blood vessels' of a person decreases, the blood pressure of the person will increase. This is because the resistance to blood flow is inversely proportional to radius of blood vessels.
EXPLANATION:
If radius of blood vessels is smaller, then the resistance it will offer to the flow of blood is grater. Therefore, whenever radius of the blood vessels decreases the more resistance, the blood vessels offer to the flow of blood. This means that blood exerts more pressure on the vessels to flow through these vessels.
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