Question

Which of the following statement(s) is/are true?

I. During inhalation ribs move out

II. During exhalation ribs move in

A Only I Correct Answer Incorrect Answer
B Only II Correct Answer Incorrect Answer
C Neither I nor II Correct Answer Incorrect Answer
D Both I and II Correct Answer Incorrect Answer

Solution

During inhalation, the muscles contract and move the ribs upwards and outwards. During exhalation, the intercostal muscles relax so the ribs move inwards and downwards.

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