B9.2 Response To Exercise

Question 1

Give two effects of exercise and the reason for them?

Answer 1

Muscular fatigue- lactic acid build up can cause proteins to denature

Sweating- respiration release heat energy so the body must cool down

Question 2

What happens when the heart rate increases?

Answer 2

Supply the body with more oxygen/ nutrients

Question 3

What happens after this

Answer 3

The gradual decrease after exercise: oxygen delivery to break down lactic acid built up in the muscles

Question 4

What is the amount of oxygen needed to break this down called?

Answer 4

Oxygen debt