The New Childrens Encyclopedia
280 Think! Act! Your brain is a complex organ. It’s a bit like a big computer but more adaptable. It controls all you do. It mak ...
THINK! ACT! 281 Dendrites pick up nerve signals. BRAIN CELL OR NEURON The nervous system is made up of the CNS and the periphera ...
SIGHT Sensing the world Humans have five senses: sight, hearing, touch, smell, and taste. Your senses tell you about the world a ...
TASTE It is now thought to be a myth that you can taste particular flavors at different places on your tongue. We have five basi ...
284 Take a breath You need to breathe constantly to take in oxygen. You do this by breathing in air, which is taken down your wi ...
TAKE A BREATH 285 THE ROUTE IN When you breathe in, air first travels down your pharynx (throat), then your larynx (voice box), ...
Food f low We eat to refuel our bodies. We need fuel from food to provide energy, as well as for growth and repair. Digestion is ...
The pancreas constantly releases digestive juices into the small intestine. Food enters the mouth where the tongue assesses whet ...
288 The start of life Human life begins after a sperm fertilizes an egg and the egg develops in the uterus (the womb). A fertili ...
THE START OF LIFE 289 TAKE A LOOK: PREGNANCY DURING the first three months of pregnancy, called the first trimester, the mothe ...
290 Stay healthy You have just one body for life, so it makes sense to look after it. Giving your body the best chance you can m ...
291 THE HUMAN BODY STAY HEALTHY HOW TO STAY HEALTHY OVitamins and minerals are found in many foods, and are essential to gener ...
292 Glossary Alveoli Tiny sacs in the lungs through which oxygen and carbon dioxide pass to and from the blood. Altitude Height ...
293 GLOSSARY Distillation Purifying a liquid by boiling it and then collecting the vapour. DNA Deoxyribonucleic acid, the molecu ...
294 Mantle Thick rocky layer of Earth between the crust and the core. Marsupial A mammal that rears its young in a pouch or fold ...
295 GLOSSARY Pollutants Any substance that contaminates the environment. Post mortem The medical examination of a dead body to e ...
303 ACKNOWLEDGMENTS Acknowledgments The publisher would like to thank the following for their kind permission to reproduce their ...
304 Reinhard Dirscherl 1tr, 109cl; Domino 231tl; Elsa 179br; Bob Elsdale 110b; Grant Faint 230 (racing car); Tim Fitzharris 56—5 ...
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