Why does blood pooling lead to an increased risk of fainting?
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A. It leads to a decrease in blood sugar B. It leads to an increase in blood sugar C. It leads to an increase in the blood supply to the brain D. It leads to a decrease in the blood supply to the brain
Correct answer is option D
A decrease in blood supply to the brain as a result of blood pooling, can lead fainting, also known as syncope. Blood pool in the legs, prevent normal amount of blood from being pumped to the brain. This momentary drop in blood flow causes a person to faint.
Fainting is a brief loss of consciousness and muscle tone that occur when not enough blood gets to the brain. This decrease in blood flow leads to a temporary lack of oxygen supply to the brain. Some of the signs and symptoms a person experiences minutes before fainting are: dizziness, blurry vision and weakness.