Respiratory System

Question 1

What is the purpose of the oral and nasal cavities

Answer 1

The main job of the nasal cavity is to warm, humidify, and filter (through the hairs and mucus) air before it enters the body. The oral cavity, or mouth, is the first step of the digestive system but can be used as a secondary source to bring air into the body.

Question 2

What is the purpose of the trachea

Answer 2

The trachea serves as passage for air, moistens and warms it while it passes into the lungs, and protects the respiratory surface from an accumulation of foreign particles

Question 3

What is the purpose of the bronchi

Answer 3

Distribute the air throughout the lungs until reaching the respiratory bronchioles and alveoli

Question 4

What is the purpose of the lungs

Answer 4

Delivers oxygen to the cells in your body. Removes waste gases, including carbon dioxide, from the body when you exhale. Protects your airways from harmful substances and irritants.

Question 5

What is the purpose of alveoli

Answer 5

The alveoli are where the lungs and the blood exchange oxygen and carbon dioxide during the process of breathing in and breathing out. Oxygen breathed in from the air passes through the alveoli and into the blood and travels to the tissues throughout the body