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SCIENCE UNIT 3 REVISION
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Name all the types of blood vessels:
Arteries, veins and capillaries
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The heart is made up of four chambers. The upper chamber are....and the lower chambers...
Atria and ventricles
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What waste is excreted through the excretory system and the digestive system?
Excretory: urine Digestive: Faecal matter
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A mix of food and saliva is called:
Bolus. What other substances are mixed in the digestive system? Explain Chyme and Faeces.
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Why is the respiratory system important? How does it help in the nutrition process?
It is important because it helps us transport oxygen and release CO2 and...
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Name this system and its organs.
Respiratory system. Nose,pharynx, larynx, trachea, lungs, brochioles, diaphragm, alveoli.
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Which substance is expelled by the skin? What system does the skin belong to?
Sweat. Skin is part of the excretory system.
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This system gets rid of waste. The kidneys are an important part of it. What other organs has it got?
Excretory system: Kidneys, ureters, urethra,etc.
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This organ is part of what system? Why is this system important?
Circulatory system. It takes nutrients and oxygen around the body.
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Blood is made up of PLASMA and CELLS. What are the three types of cells. Explain what each cell does.
red, white and platelets.
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Name this system and three important organs in it.
Digestive system. For example: Stomach, liver, pancreas, small and large intestine, anus, etc.
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Explain the process of respiration. Inhalation and gas exchange...
You inhale oxygen and you exhale carbon dioxide and...
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What are the two movements of the heart? Explain them.
Systole and diastole
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What are the three vital functions?
NUTRITION, INTERACTION AND REPRODUCTION
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How does the digestive system take part in the nutrition process?
It breaks down food and its nutrients are absorbed by the small intestine...
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