Involuntary hyperventilation during an anxiety attack can cause a person to become faint because of __________.

Involuntary hyperventilation during an anxiety attack can cause a person to become faint because of __________.

increased CO2 levels caused by an increase in cellular respiration, reducing brain perfusion and causing ischemia
the effects of increased O2 levels in the blood and the consequent constriction of cerebral blood vessels
lowered CO2 levels in the blood and consequent constriction of cerebral blood vessels
decreased O2 levels in the blood, causing cells to lack adequate ATP synthesis
increased temperature caused by increased intercostal muscle activity

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