Question

Why is inhalation described as an active process?
A) It requires the diaphragm to relax and use energy to move, creating a positive pressure.
B) It requires chest muscles to relax and use energy to move, creating a positive pressure.
C) It requires chest muscles to contract and use energy to move, creating a negative pressure.
D) It uses oxygen to assist chest muscles to contract, creating a negative pressure.

Answer

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