Q598
When there is a decrease in the concentration of oxygen in the blood, the breathing rate
A.
increases
AnswerB.
decreases
C.
first increases and then decreases
D.
is not affected
Answer: Option A
Solution
Answer: Option A
Solution:
When there is a decrease in the concentration of oxygen in the blood, the breathing rate increases. Breathing rate and breathing volume increase, the blood pressure increases, the heart rate increases, and kidney bicarbonate production ( in order to buffer the effects of blood acidosis), occur.