KROK 1 2007 – Question 77 · KROK (Medicine) · Physiology

A man’s intrapleural pressure is being measured. In what phase did the man hold his breath, if his pressure is 7,5 mm Hg?

  1. A. Quiet inspiration
  2. B. Forced inspiration
  3. C. Quiet expiration
  4. D. Forced expiration
  5. E. -
Hint

Intrapleural pressure is normally below atmospheric and becomes more negative as the thorax expands; judge how negative it is during calm versus maximal-effort breathing.

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