What happens during normal inspiration?
1) The P_pl increases further below atmospheric pressure.
2) The transpulmonary pressure gradient widens.
3) P_alv drops below that at the airway opening.

Question

What happens during normal inspiration? 1) The P_pl increases further below atmospheric pressure. 2) The transpulmonary pressure gradient widens. 3) P_alv drops below that at the airway opening.

Quizplus · Accepted Answer

During normal inspiration, the transpulmonary pressure gradient widens as the pleural pressure (Ppl) becomes more negative, and the alveolar pressure (Palv) drops below atmospheric pressure, allowing air to flow into the lungs.

What Happens During Normal Inspiration