Five Facts - The Respiratory System

The video provides an overview of the respiratory system, detailing its components such as the nose, mouth, voice box, throat, windpipe, airways, and lungs. It explains the functions of the nose, including filtering air and regulating temperature. The voice box, or larynx, is discussed in terms of its role in speech production. The video also covers the airways and lungs, describing how air travels through bronchioles. Finally, it explores the phenomenon of yawning, its causes, and its contagious nature.

Describe the pathway air takes from the throat to the lungs.

What are some reasons why we yawn, according to the text?