Unit 2. Our body systems.

What is the most fundamental unit of the human body?

• The tissues

• The brain

• The cells

• The muscles

Cells of the same type come together to create

• 
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• 
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The most important function of the respiratory system is...

• To make the diaphragm move up and doWN

• To move the nutrients from lungs to the rest of the body

• To bring oxygen into the body and carbon dioxide out of the body

Which organs are the most important for breathing and contain Alveoli?

What is the ribcage made up of? Tick ALL the correct answers...

• Backbone

• Diaphragm

• Pharynx

• Sternum

• Ribs

In the respiratory movement of exhalation...

• Our diaphragm moves down and we take air into our lungs.

• Our diaphragm moves up and we expel air from our lungs.

Where does the process of gas exchange happen?

• In the alveolus

• In the bronchi

• In the blood vessel

• In the trachea

What is the function of the circulatory system?

• To move the oxygen in and out of the body

• To defend our system from bacteria

• To carry nutrients and oxygen to all the cells

What are the names of the two main types of blood vessels?

What is the name of the thin blood vessels that reach every part of our body?

• Ventricles

• Aorta

• Capillaries

• Platelets