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Friday, 11 September 2026
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During inhalation, pressure inside the lungs becomes:

During inhalation, pressure inside the lungs becomes:
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
  • A Constant throughout breathing
  • B Higher than atmospheric pressure
  • C Lower than atmospheric pressure
  • D Equal to blood pressure
Correct Answer: Option C
Explanation:
Expansion of the thoracic cavity reduces lung pressure below atmospheric pressure, causing air to enter the lungs.

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