B9.2 - The Response To Exercise (Finished)

Question 1

Why is there increased respiration when you exercise?

Answer 1

When you exercise your muscles contract more frequently than normal. As muscles need energy to contract, more energy is needed which comes from increased respiration

Question 2

How does your body respond to exercise?

Answer 2

• Your heart rate increases and the arteries supplying blood to the muscles dilate (widen)
• Your breathing rate increases and you breathe more deeply
• Glycogen stored in the muscle cells is converted back to glucose

Question 3

Why does your breathing rate increase and you breathe deeper when exercising?

Answer 3

Your breathing rate and breath volume increase to get more oxygen into the blood and remove co2 more quickly

Question 4

Why does heart rate increase when you exercise and arteries supplying muscles with blood dilate?

Answer 4

Your heart rate increases to get oxygenated blood around your body quicker and get carbon dioxide removed from the muscles faster. The arteries dilate to increase the flow of oxygenated blood to muscles

Question 5

Why is glycogen stored in muscles converted back to glucose during exercise?

Answer 5

To uspply the cells with the fuel they need for increased cellular respiration