Respiratory System

Front

What is the diaphragm?

Back

The diaphragm is a large muscle located at the base of the lungs that contracts and relaxes to help move air in and out of the lungs.

Front

How does the diaphragm aid in breathing?

Back

When the diaphragm contracts, it creates a vacuum that allows the lungs to expand and fill with air, bringing in oxygen.

Front

What is the trachea?

Back

The trachea, also known as the windpipe, is a tube that directs air from the pharynx to the lungs and branches into two bronchi.

Front

What gas do we breathe out?

Back

We breathe out carbon dioxide, which is a waste product of respiration.

Tags

NGSS.MS-LS1-2

Front

What are alveoli?

Back

Alveoli are tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide occurs between the air and the blood.

Tags

NGSS.MS-LS1-2

Front

What is the function of the epiglottis?

Back

The epiglottis is a flap of tissue that covers the trachea during swallowing to prevent food and liquid from entering the airway.

Front

What role do bronchi play in the respiratory system?

Back

Bronchi are the two main branches of the trachea that lead into each lung, allowing air to flow into the lungs.

Front

What is the process of gas exchange?

Back

Gas exchange is the process where oxygen from the air is transferred to the blood in the alveoli, and carbon dioxide is removed from the blood.

Front

What happens to the diaphragm when we inhale?

Back

When we inhale, the diaphragm contracts and moves downward, increasing the space in the chest cavity and allowing air to enter the lungs.

Front

What happens to the diaphragm when we exhale?

Back

When we exhale, the diaphragm relaxes and moves upward, decreasing the space in the chest cavity and pushing air out of the lungs.