Respiratory System

The Respiratory System is the process by which __________ enters the body.

• lungs

• air

• trachea

• alveoli

Air enters the body through the __________ and mouth.

• ears

• lips

• nose

• eyes

The ______ are the main organs of the respiratory system.

• lungs

• ribs

• diaphragm

• bronchioles

When you breathe in, you take in oxygen and let out carbon monoxide.

• True

• False

What is another name for the trachea?

• lung

• alveoli

• diaphragm

• windpipe

What are the two tubes that lead to the lungs called?

• bronchioles

• bronchi

• alveoli

• diaphragm

What is the diaphragm?

• two tubes that lead to the lungs

• a dome-shaped sheet of muscle

• sacs at the end of bronchioles

• tube where air enters the body

What is inhalation?

• breathing in

• air that is breathed out the lungs

• breathing out

What is carbon dioxide?

• breathing out

• air that is breathed out the lungs

• breathing in

What is exhalation?

• breathing in

• air that is breathed out the lungs

• breathing out