Why does blood flow to muscles increase during exercise?
Muscles require more energy during exercise. Additional oxygen and glucose are needed to release the energy. Blood flow increases to supply these to muscles faster.
Respiration also increases to allow more oxygen to be transported to the muscles.
CW
Related Biology GCSE answers
All answers ▸What are the products of digestion of a) proteins, b) fats and c) carbohydrates?
What is active transport? Use an example to demonstrate when active transport is used.
Why is it that Gonorrhoea can be treated with an antibiotic, but HIV cannot?
Why does the breathing rate not return to normal after vigorous exercise?