Question

state two major features about the changes in respiration which takes place during muscular exercise​

Answer 1

Answer:

During heavy exercise, expiratory flow limitation and prolonged expiratory time result in higher average positive intrathoracic pressures that reduce ventricular transmural pressure and act like a Valsalva manoeuver, decreasing the rate of ventricular filling during diastole and reducing stroke volume, venous return

Explanation:

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Answer 2

Explanation:

during mascular exercise our body requires high amount of oxygen for the excess oxygen requriment our cells undergo unaerobic respiration and produce oxygen,ATP require and produce ethonal as byproduct

this help in sudden requirements of energy but cause muscle cramps due to accumulation of ethonal