Question

Calculate alveolar ventilation (12bpm) at rest (350ml) VS. using near maximum IRV (3000ml VC) per minute....

Calculate alveolar ventilation (12bpm) at rest (350ml) VS. using near maximum IRV (3000ml VC) per minute.

**Please also compare and discuss the differences!!! Thank you

Science   Anatomy-And-Physiology   
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Answer #1

Alveolar ventilation is the amount of air reaches the alveoli.

If the person inhales 500ml of air, out of that 150ml reaches anatomical dead space and remaining 350ml reaches alveoli.

So that alveolar ventilation rate is calculated as below:

Alveolar ventilation rate= air that ventilates alveoli × respiratory rate

= 350ml×12

=4200ml.

Inspiratory Reserve volume (IRV) is maximal volume of air inhaled at the end inspiratory level. It is 3000ml.

It is sum of total lung capacity and tidal volume.

Alveolar ventilation is differ from inspiratory reserve volume.

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