Respiratory System

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

What is the site of gas exchange?

• alveoli

• nose

• lung

• bronchi

The two main branches from the trachea (one to each lung)

• bronchi
• alveoli
• capillaries
• bronchioles

Which of the following happens when you exhale?

• chest cavity expands

• your lumgs become smaller

• your chest cavity becomes smaller

• your lungs take in and give off oxygen

The main ORGAN responsible for breathing is:

• the Brain

• the Lungs

• the Liver

• the Kidneys

What does your body need from the air around you?

• Nitrogen

• Oxygen

• Carbon Dioxide

• Argon