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B2 revision (Heart (Superior vena cara, Right Atery, Right Atrum, Right…
B2 revision
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Digestive System
Mouth- your teeth and saliva breaks up the food ready to go into your gullet/ oesophagus. At the top of your gullet there is a ring of muscle that opens for the food to enter it.
Gullet- It contacts and relaxes to push the food down at the bottom there is another ring of muscle which opens up to the stomach.
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The circulatory system carries blood around you body in tubes called blood vessels. Your body takes oxygen and glucose to all the cells in your body. There are three types of blood vessels.
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