Which of the following changes does not occur when a person engages in heavy exercise?
A) The supply of blood to the active muscles decreases.
B) The number of times the heart beats each minute increases dramatically.
C) The blood vessels stretch, which allows them to carry more blood.
D) The blood pressure in the arteries increases.

Question

Quizplus · Accepted Answer

When a person engages in heavy exercise, the supply of blood to the active muscles actually increases, not decreases. This is necessary to deliver oxygen and nutrients to the muscles and remove waste products such as carbon dioxide. The other choices are all changes that occur during heavy exercise - the heart beats faster and harder to pump more blood, the blood vessels dilate to increase blood flow, and blood pressure increases as a result.

Which of the Following Changes Does Not Occur When a Person