Which of the following pressures vary throughout the normal breathing cycle?
I.alveolar pressure (P_alv)
II.body surface pressure (P_bs)
III.mouth pressure (P_ao)
IV.pleural pressure (P_pl)

Question

Which of the following pressures vary throughout the normal breathing cycle? I.alveolar pressure (P_alv) II.body surface pressure (P_bs) III.mouth pressure (P_ao) IV.pleural pressure (P_pl)

Quizplus · Accepted Answer

Alveolar pressure (P_alv) and pleural pressure (P_pl) are the pressures that vary throughout the normal breathing cycle. Body surface pressure (P_bs) and mouth pressure (P_ao) remain relatively constant. Therefore, the correct answer is D, which includes only I and IV.

Which of the Following Pressures Vary Throughout the Normal Breathing