Brain Blood Flow Autoregulation ________

question 59

Multiple Choice

Brain blood flow autoregulation ________.

• A) is less sensitive to pH than to a decreased oxygen level
• B) is controlled by cardiac centers in the pons
• C) is abolished when abnormally high CO₂ levels persist
• D) causes constriction of cerebral blood vessels in response to a drop in systemic blood pressure

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Definitions:

Circadian Rhythms

Natural physical, mental, and behavioral changes that follow a 24-hour cycle, influencing sleep, wakefulness, and other bodily functions.

Alcohol Use

The consumption of beverages containing ethanol, which can range from moderate drinking to alcohol abuse and dependence.

Hostility

A state of anger and aggression towards others, often resulting from frustration or perceived threats.

Nicotine

A stimulant compound found in tobacco plants, which is highly addictive and affects the nervous system.