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JAMB Biology 2003 Question 15

Question 15

Respiration

Use the diagram of the bell jar set-up to answer: In the experimental set-up, the rubber sheet represents the organ called

Diagram for this question
  1. A.pleural cavity
  2. B.lungs
  3. C.diaphragm
  4. D.intercostal muscle.
Show the answer and explanation

Answer: C (diaphragm)

Explanation

The rubber sheet closes the bottom of the jar the way the diaphragm closes the bottom of the chest. Moving it up and down changes the volume inside.