Review: The Respiratory System

Front

What is the purpose of the respiratory system?

Back

The respiratory system takes in oxygen and releases carbon dioxide.

Front

Where does oxygen initially enter into the body?

Back

Oxygen initially enters the body through the nose and mouth.

Front

What are the tiny grape-like air sacs in the lungs where gas exchange occurs?

Back

The tiny grape-like air sacs are called alveoli.

Front

What are the two branches that branch off from your trachea and lead into your lungs?

Back

The two branches are called bronchus (bronchi).

Front

What are the air sacs covered with capillaries where gas exchange takes place?

Back

The air sacs are called alveoli.

Front

What is the main gas that the respiratory system takes in?

Back

The main gas taken in by the respiratory system is oxygen.

Front

What gas does the respiratory system release?

Back

The respiratory system releases carbon dioxide.

Front

What is the role of the trachea in the respiratory system?

Back

The trachea, or windpipe, carries air to and from the lungs.

Front

What is the diaphragm and its function in respiration?

Back

The diaphragm is a muscle that helps in breathing by contracting and relaxing to allow air in and out of the lungs.

Front

What is the difference between inhalation and exhalation?

Back

Inhalation is the process of taking air into the lungs, while exhalation is the process of releasing air from the lungs.