Which of these factors would cause an increase in heart rate?
A) increased parasympathetic stimulation
B) stimulation of baroreceptors in the aorta
C) a decrease in blood pH
D) a decrease in carbon dioxide in the blood
E) excess potassium ions

Question

Quizplus · Accepted Answer

A decrease in blood pH, known as acidosis, increases the heart rate as a compensatory response to maintain oxygen delivery to tissues. This is due to the activation of chemoreceptors that detect changes in hydrogen ion concentration in the blood.

Which of These Factors Would Cause an Increase in Heart