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What do the lungs do?
What is breathing?
The air that we breathe in has dust and smoke particles and microbes (which cause disease) in it. Those particles enter the air passages.
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Which two special cells keep the lungs clean and free from disease?
Label this image:
(1, 2, 4, 5, 6, 8, 9, 10, 11)
How do we breathe?
What happens in the alveoli?
What causes suffocation?
respiration ≠ breathing
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explain why.
ventilation:
What happens to your ribcage/diaphragm when you:
i] breathe in
ii] breathe out
What does the heart do?
True or False:
The heart is mainly made of fat.
The blood is carried in tubes, called _____, to the organs and tissues in the body.
What are the two types of vessels?
What is blood made up of?
Name two things the blood transports.
What causes a heart attack?
Define valves.
