“Welcome to the hit game show Name that Organ! Where knowing body parts can win you a stage full of wonderful prizes! I’m your host, Ana Tomy. I’ll give you a definition and you Name That Organ! Let’s play Name That Organ!”
“This systems primary function is air-supply; it contains cilia, hair-like structures that function as tiny filters.”
Explanation
Answer: B - The respiratory systems primary function is to provide the body with oxygen, as well as elimination of carbon dioxide. When air is inhaled, it enters the body through the nose, passes through the nasopharynx (throat) and larynx (voice box) and enters the trachea (windpipe), into the bronchi of the lungs, the bronchi branch into smaller bronchioles, ending in alveolar sacs. It is here where the actual oxygen exchange takes place with blood cells. Cilia line the respiratory system, to filter air breathed in.
