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WE NEED ENERGY. - Coggle Diagram
WE NEED ENERGY.
How do we breathe?
The exchange of gases in the body
Mouth
Trachea
Nose
How
The respiratory system
Oxigen
Lungs
Airways
What happens to the food we eat?
Digestive system
Ingestion
Nutrition
The stages of digestion.
Absorption.
Faeces
Propulsion
Why does the heart beat ?
The circulatory system
plasma
platelets
blood vessels
Blood circulation
aotra
Valves
heart
Why does the heart beat ?
The circulatory system
aorta
Veins
Atria
Blood circulation
Valves
right
heart
