Question

indicate the statement that describes respiratory function in a highly trained athlete at maximal exercise. multiple choice unchanged minute ventilation, increased respiratory rate, decreased vital capacity increased residual volume; increased respiratory rate; decreased alveolar ventilation increased tidal volume; unchanged minute ventilation; unchanged alveolar ventilation increased minute ventilation; increased alveolar ventilation; unchanged tidal volume increased tidal volume; increased minute ventilation; increased alveolar ventilation

Explanation:

At maximal exercise, a highly - trained athlete needs more oxygen. Tidal volume (the amount of air inhaled or exhaled in a normal breath) increases to move more air per breath. Minute ventilation (the total volume of air inhaled or exhaled per minute) increases as it is the product of tidal volume and respiratory rate. Alveolar ventilation (the volume of air reaching the alveoli per minute) also increases to meet the higher oxygen - demand and carbon - dioxide removal needs.

Answer:

Increased tidal volume; increased minute ventilation; increased alveolar ventilation