What is the purpose of the respiratory system?

• takes in oxygen and release carbon dioxide

• takes in carbon dioxide and releases oxygen

• takes in nitrogen and releases carbon dioxide

• takes in oxygen and releases nitrogen

Where does oxygen initially enter into the body?

• nose and mouth

• eyes

• brain

• throat

This area warms, moisturizes, and filters air before going to the lungs. What is it?

• nasal cavity

• nose

• mouth

• trachea

What is the formal name for your throat area?

• pharynx

• larynx

• throat

• esophagus

Where are your vocal chords housed and what is this area called?

• pharynx

• larynx

• throat

• trachea

Your windpipe is also called the...

• trachea

• larynx

• pharynx

• esophagus

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

• bronchus (bronchi)

• alveoli

• lungs

• trachea

What are the smaller branches of the bronchi called?

• bronchioles

• alveoli

• ravioli

• lungs

These tiny grape-like air sacs is where the gas exchange of oxygen and carbon dioxide happen in the lungs. What is it?

• alveoli

• lungs

• ravioli

• bronchioles

Tags

NGSS.MS-LS1-3

The elastic sponge-like organs are where gas exchange occurs.

• lungs

• alveoli

• ravioli

• trachea