exercise

Question 1

why do humans need energy?

Answer 1

for movement

Question 2

what does respiration provide?

Answer 2

energy

Question 3

during exercise, why does aerobic respiration increase?

Answer 3

because the body needs energy for muscle contraction

Question 4

during exercise what happens to breathing rate and volume?

Answer 4

increases

Question 5

why does the heart rate increase during exercise?

Answer 5

to pump oxygenated blood around the body

Question 6

what happens when not enough oxygen is supplied to muscles?

Answer 6

anaerobic respiration takes place

Question 7

during long periods of vigorous activity, what causes muscles to fatigue and stop contracting efficiently?

Answer 7

lactic acid

Question 8

the body has to remove lactic acid, what do this create?

Answer 8

oxygen debt

Question 9

when the lactic acid is transported out of muscles, where is it sent to, what is it converted to, and what is it stored as?

Answer 9

sent to the liver, converted to glucose, and stored as glycogen

Question 10

what is the definition for oxygen debt?

Answer 10

amount of extra oxygen body needs after exercise to deal with lactic acid