Watch and listen to the cartoon videos on BBC Bitesize. Then try the online quizzes. If you want more information, read the articles. NOTE that you can turn off the sound, and you can turn on subtitles, while watching the videos.
Respiratory System
The human respiratory system is adapted to allow air to pass in and out of the body, and for efficient gas exchange to happen. Exercise and smoking both affect the lungs and circulatory system.
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Circulatory System
Blood is pumped away from the heart at high pressure in arteries, and returns to the heart at low pressure in veins. The human circulatory system is a double circulatory system.
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Nervous System
The nervous system includes the central and peripheral nervous systems. The sense organs, including the eye, contain receptors that are sensitive to stimuli and respond with reflex actions.
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Diet
Food provides energy and nutrients. Components of the diet have different sources and functions. An unbalanced diet can lead to deficiency diseases. Energy needs vary according to age and activity.
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Digestive System
Digestion is the breakdown of carbohydrates, proteins and fats into small soluble substances to be absorbed into the blood. Amylase, proteases and lipases are enzymes that are important in digestion.
video
quiz
article
Respiratory System
The human respiratory system is adapted to allow air to pass in and out of the body, and for efficient gas exchange to happen. Exercise and smoking both affect the lungs and circulatory system.
video
quiz
article
Circulatory System
Blood is pumped away from the heart at high pressure in arteries, and returns to the heart at low pressure in veins. The human circulatory system is a double circulatory system.
video
quiz
article
Nervous System
The nervous system includes the central and peripheral nervous systems. The sense organs, including the eye, contain receptors that are sensitive to stimuli and respond with reflex actions.
video
quiz
article
Diet
Food provides energy and nutrients. Components of the diet have different sources and functions. An unbalanced diet can lead to deficiency diseases. Energy needs vary according to age and activity.
video
quiz
article
Digestive System
Digestion is the breakdown of carbohydrates, proteins and fats into small soluble substances to be absorbed into the blood. Amylase, proteases and lipases are enzymes that are important in digestion.
video
quiz
article
For more information or a different way of looking at similar information:
http://www.bbc.co.uk/science/humanbody/body/index_interactivebody.shtml
http://www.bbc.co.uk/science/humanbody/sleep/
https://www.thoughtco.com/organ-systems-373571
http://www.innerbody.com/
http://www.bbc.co.uk/science/humanbody/body/index_interactivebody.shtml
http://www.bbc.co.uk/science/humanbody/sleep/
https://www.thoughtco.com/organ-systems-373571
http://www.innerbody.com/