Question

What anatomical feature limits maximal ventilation

Answer 1

Maximal ventilation is the amount of air taken in at a maximum level. In one minute it is maximal ventilation is the amount of air taken in and in one minute it is

= Tidal volume× respiratory rate

Our body has anatomical and physiological dead space in it . That is it causes a Great limitbin the ventilation of air

1 ) anatomical dead space is the path of air from the nose to the bronchioles that will not participate in the ventilation process. Gas exchange does not take place in these areas

2) physiological dead space

This is the dead space that add up with the anatomical dead space. They are

• Air that enter the alveolar region that is non functional.
• This is the specific alveolar region which will not receive adequate blood flow . So ventilation will be limited

So the alveolar ventilation=( tidal volume- dead space)× respiratory rate

This specific anatomical feature from the nose to bronci will not participate in ventilation and cause reduction in maximal ventilation