Multiple choice

Which of the following is responsible for gaseous exchange in the human body?

  1. Temperature difference

  2. Permeability difference

  3. Pressure difference

  4. Solubility difference
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The difference in partial pressures of gases results in diffusion of gases through the respiratory membrane. Diffusion occurs when there is a difference between partial pressures of alveolar air and blood.

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