Question

question 27 (1 point)
listen
after prolonged strenuous exercise has stopped, heavy breathing will ofte continue for several minutes in order to provide the oxygen needed to:
replace oxygen displace from muscle myoglobin.
none of these choices are correct.
convert the lactic acid produced during exercise back into glycogen.
all of these choices are correct.

Explanation:

During strenuous exercise, the body may rely on anaerobic respiration, which produces lactic acid. After exercise, heavy breathing (excess post - exercise oxygen consumption, EPOC) occurs. Oxygen is needed to replace oxygen displaced from muscle myoglobin (myoglobin stores oxygen in muscles). Also, oxygen is used in the Cori cycle where lactic acid is converted back to glycogen in the liver (and glycogen can be stored or used again).

Answer:

all of these choices are correct.