Unit 21 Human Biology Warm-up
Exercise 2 Listen and guess which parts of the body of being described.
Which words help you to decide.
1 This organ weighs about a kilo and is made up of two sides. It is like a super computer that processes information.
2 This organ beats 100,000 times a day. With each beat it moves eighty millilitres of blood-that's 8,000 litres of blood per day!
It pumps blood into the lungs, where it receives oxygen, before being pumped around the rest of the body.
3 These organs absorb oxygen and get rid of carbon dioxide.
They are situated on either side of the heart. They receive air as a result of breathing
and when blood passes through, they give it oxygen.
4 This is a very delicate organ. It's moved by six muscles and consists of various different layers.
Light enters and reaches special light sensitive cells.
This works like a camera and finally sends signals to the brain.
5 This is about the size of a closed hand. Its job is to break down the food we eat so that we have energy and can be healthy and strong.
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