Front

What is the major respiratory organ that takes in oxygen and releases carbon dioxide?

Back

Lungs

Front

Where does oxygen initially enter into the body?

Back

Nose and mouth

Front

Which body structure protects the lungs from outside harm?

Back

The Rib Cage

Front

How does oxygen move from the lungs into the bloodstream?

Back

Through small blood vessels in the lungs.

Front

What are the smaller tubes in the lungs called?

Back

Bronchioles

Front

What is the primary function of the respiratory system?

Back

To facilitate gas exchange, providing oxygen to the body and removing carbon dioxide.

Front

What is the role of the diaphragm in respiration?

Back

The diaphragm contracts and relaxes to help draw air into and push air out of the lungs.

Front

What is the process of breathing in called?

Back

Inhalation.

Front

What is the process of breathing out called?

Back

Exhalation.

Front

What is the function of alveoli in the lungs?

Back

Alveoli are tiny air sacs where gas exchange occurs between the lungs and bloodstream.