Respiratory System Part 1 Quiz

The trachea is a tube that carries air from the larynx to the lungs and is commonly called the windpipe.

Alveoli are tiny air sacs in the lungs where oxygen enters the bloodstream and carbon dioxide leaves.

This sequence correctly lists the main structures air passes through to get from the nose to the alveoli for gas exchange.

The epiglottis is a flap of cartilage that covers the trachea during swallowing to prevent food or liquids from entering the respiratory tract.

The diaphragm is a large, dome-shaped muscle located at the base of the lungs. When it contracts, it flattens, increasing the volume of the chest cavity and causing air to rush in.

Ventilation is the mechanical process of moving air in and out of the lungs.

Carbon dioxide is a waste product of cellular respiration and is released from the body during exhalation.

Oxygen binds to the iron-containing protein hemoglobin, which is found in red blood cells, for efficient transport throughout the body.

Mucus traps dust and germs, while cilia are tiny hair-like structures that sweep the mucus and trapped particles out of the respiratory tract.

The larynx contains the vocal cords and is responsible for sound production, hence its common name, the voice box.