Effects Of Exercise

Question 1

How and why do we release more energy during exercise?

Answer 1

Respiration has to increase because more energy is required.

Question 2

Because more energy is what do we need to respirate more and how do we get it?

Answer 2

Heart rate increases, breathing rate and breath volume all increase to get more oxygen into the muscles for aerobic respiration (because it’s more efficient) via the bloodstream

Question 3

What happens if there’s not enough oxygen for respiration?

Answer 3

Anaerobic respiration occurs

Question 4

What happens when we anaerobically respirate? (products and what that causes)

Answer 4

Due to the incomplete oxidisation of glucose lactic acid builds up in muscles which results in oxygen debt.

Question 5

Why do we stop exercise after long periods?

Answer 5

Muscles become fatigued and stop contracting (like a stitch)