Evaluate the correctness of the following statement :
IF A PERSON BREATHES IN AND OUT RAPIDLY FOR SOME TIME ( HYPERVENTILATION ), HIS BODY ALLOWS HIM TO HOLD HIS BREATH FOR A LONGER PERIOD THAN IN THE CASE OF NORMAL VENTILATION ( FOR EXAMPLE WHEN HE IS SUBMERGED IN WATER ) .
Is that due to
(i) Increase in O2 levels in his body
(ii) Decrease level of CO2 in his body at that time ?
Dear student,hyperventilation is caused by Low carbon dioxide levels which lead to narrowing of the blood vessels that supply blood to the brain. This reduction in blood supply to the brain leads to symptoms like lightheadedness and tingling in the fingers. Severe hyperventilation can lead to loss of consciousness.Regards.