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Question

Identify A, B and C in the following respiratory system diagram.

A
A: Nasal cavity, B: Diaphragm, C: Lungs
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B
A: Diaphragm, B: Lungs, C: Nasal cavity
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C
A: Nasal cavity, B: Lungs, C: Diaphragm
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D
A: Diaphragm, B: Nasal cavity, C: Lungs
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Solution

The correct option is C A: Nasal cavity, B: Lungs, C: Diaphragm
  • In the following diagram, A is the nasal cavity. The respiratory system starts from the nose and the inhaled air enters the nasal cavity through nostril.
  • B is the lungs which is an important respiratory organ where the exchange of gases takes place.
  • C is the diaphragm which is a dome-shaped structure and facilitates breathing.

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