cardiovascular and respritory test

Question 1

What are the two main functions of the cardiorespiratory system?

Answer 1

The two main functions are to transport o2 and nutrients to the muscles and to remove co2. The second function is to prevent infection.

Question 2

What are three factors that affect the AVo2 difference?

Answer 2

Number of mitochondria and their ability to extract oxygen and capillaries, mitochondrial enzymes, and volume of blood.

Question 3

What are four purposes of oxygen uptake after exercise?

Answer 3

Breakdown lactic acid, bring heartrate back down, get blood pressure back to normal, replenishes o2 to muscles and replenishes phosphocreatine stores.

Question 4

List two ways in which endurance training can improve the effectiveness of the cardiovascular system?

Answer 4

It will increase the size and strength of the heart, it will thicken the walls of the arteries and the overall volume of blood will increase, since the cardiac muscle can contract faster the heart is more efficient it will not have to work as hard to pump blood. Will have a greater stroke volume. Increase in the number of capillaries, increase of diffusion.