Question

which of the following will not increase the heart rate?
multiple choice
decreased blood oxygen
increased blood carbon dioxide
increased blood pressure
decreased blood ph

Explanation:

When blood pressure increases, the baroreceptors in the arteries are stretched more. This sends signals to the brain to decrease the heart rate (as the body tries to maintain homeostasis and lower the pressure). Decreased blood oxygen (hypoxia) stimulates chemoreceptors which can increase heart rate. Increased blood carbon dioxide (hypercapnia) and decreased blood pH (acidosis) also stimulate chemoreceptors that lead to an increase in heart rate as the body tries to improve gas exchange (by increasing cardiac output to get more blood to the lungs for oxygen - carbon dioxide exchange).

Answer:

Increased blood pressure