Grade 6 biology

What is the main function of the respiratory system?

• to break food down

• supply the blood with oxygen

• circulate the blood

• controlling the body

How does the respiratory system deliver oxygen to different parts of the body?

• breathing

• circulation

• inhale carbon dioxide

• exhale oxygen

Which part of the body is not used for the respiratory system to work?

• mouth

• nose

• small intestine

• diaphragm

What is the diaphragm's main function?

• pump blood into the lungs

• pump carbon dioxide out of the lungs and pull oxygen into the lungs

• pump oxygen out of the lungs and pull carbon dioxide into the lungs

• pumping blood

Inside each of your lungs there are tubes called bronchi. These branch into even smaller tubes much like the branches of a tree. What are at the ends of these tubes?

• alveoli

• diaphragms

• cells

• lobus

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

What are the main organs of gas exchange in the respiratory system?

• diapragm
• lungs
• trachea
• bronchi

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

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

A disorder of the lungs called ____ causes the bronchi to become restricted (get smaller) so air can't get to the lungs.

• asthma 
• cold
• influenza 
• bronchitis 

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

• bronchi
• alveoli
• capillaries
• bronchioles