Which of the following statements is false?

A. Decreasing levels of oxygen in the blood
are detected by chemoreceptors in the
brainstem.
B. Breathing is controlled by both voluntary
and involuntary mechanisms.
C. Chemoreceptors involved in the
homeostatic control of breathing are located
in the brainstem and the carotid and aortic
bodies.
D. Stronger or more frequent contraction of
respiratory muscles helps to remove excess
CO2 from the blood.
E. As an organism's activity level increases,
the level of CO2 in the blood will increase and
stimulate faster or stronger breathing.


A

Biology & Microbiology

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