Human Physiology
How your body systems work together: circulation, respiration, nerves and more
In the beginning...
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Lessons
Cells, tissues and organs
The heart
Practice: Label the heart
Cardiac output
Arteries, veins and capillaries
Practice: Sort the vessels
What blood is made of
Practice: Match the parts of blood
Breathing
Practice: Breathing in or out
Gas exchange in the alveoli
Neurons and reflexes
Practice: Order the reflex arc
The brain
Digestion
Digestive enzymes
Practice: Match the enzymes
Defending the body
Vaccination
Practice: Sort the defences
Homeostasis
Blood glucose
Practice: Control blood glucose
Practice: Systems working together
Course Complete
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How your body works
Learn how the circulatory, respiratory, nervous, digestive, and immune systems keep you alive. Interactive diagrams and practice at every step.
