10 Questions
Which gas is wanted and taken into the body for a cell's function?
Oxygen
What is the metabolic waste product that needs to be eliminated from the body?
Carbon dioxide
How are oxygen and carbon dioxide gas concentrations expressed in the blood?
As pressures
What happens to the pH of the blood when the PCO2 level increases?
It becomes more acidic
What controls ventilation in the body?
The brain stem
Which region of the body contains chemoreceptors that are sensitive to changes in O2, CO2, and hydrogen ion concentrations in the blood?
The brain
Where are the peripheral chemoreceptors located?
In the aorta
What sends signals to respiratory muscles to either contract or relax?
The brain stem
What happens to the rate of respiration when there is an increase in plasma PCO2?
It increases
What happens to the PCO2 level in the blood when the rate of respiration increases?
It decreases
Test your knowledge on the mechanisms that regulate blood oxygen and carbon dioxide levels in this quiz! Explore the importance of PO2 and PCO2 pressures and their role in cellular function and waste elimination.
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