Respiratory System

When we breathe, we take in ....

• nitrogen

• carbon dioxide

• oxygen

• hydrogen

A place to exchange oxygen and carbon dioxide is ....

• bronchus

• alveoli

• lung

• bronchi

Why is the left lung slightly smaller than the right lung ?

• to give space for the heart

• to breathe easily

• to give space for the stomach

• to swallow easily

The other name for trachea is ....

• food pipe

• wind pipe

• lung

• heart

The diaphragm is in letter ....

• a

• b

• c

• d

• e

When you breathe, your lungs take in ___ and remove ___. 

• air/oxygen
• oxygen/carbon dioxide 
• carbon dioxide/waste 
• waste/air 

The air sacs that are covered with capillaries where gas exchange takes place

• bronchi
• lungs
• oxygen
• alveoli

What is the main function of the respiratory system?

• to provide oxygen and remove carbon dioxide from the body
• to bring oxygen to the body
• to break down food and absorb nutrients
• to remove oxygen from the body and deliver carbon dioxide

The drawing in of breath; inhalation.

• Inspiration

• Expiration

Breathing out; exhalation of breath.

• Inspiration

• Expiration