Question

Respiration in muscles during heavy exercise.




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Answer 1

Answer:

The respiratory muscles

As exercise intensity increases, minute ventilation ( E) rises homologous to metabolic rate. A decrease in end-expiratory lung volume (EELV) and increase in end-inspiratory lung volume (EILV) accommodate changes in tidal volume (VT) and E.

Answer 2

$\huge{\mathfrak\red{Answer}}$

Respiration in muscles during heavy exercise.

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.