Question

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

• A. A: Nasal cavity, B: Diaphragm, C: Lungs
• B. A: Diaphragm, B: Lungs, C: Nasal cavity
• C. A: Nasal cavity, B: Lungs, C: Diaphragm
• D. A: Diaphragm, B: Nasal cavity, C: Lungs

Answer 1

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.