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HUMAN BODY

BODY
WHAT MAKES HUMANS SPECIAL?
WHY ARE WE ALL DIFFERENT?
CELLS
ORGANS
IMAGING
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SKELETON
HOW STRONG ARE BONES?
ARE BONES DRY?
HOW DOES A SKELETON GROW?
BONE
JOINTS
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MUSCLE
WHAT ARE INVOLUNTARY MUSCLES?
HOW DO MUSCLES WORK WITH BONES?
MUSCLE FIBERS
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SKIN
WHAT MAKES SKIN TOUGH?
WHAT’S UNDER THE EPIDERMIS?
HOW DOES SKIN CONTROL BODY TEMPERATURE?
WHY DOES SKIN COLOR VARY?
FINGERNAILS
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CIRCULATION
ARE ARTERIES AND VEINS DIFFERENT?
WHAT ARE CAPILLARIES?
BLOOD
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HEART
WHAT’S INSIDE THE HEART?
WHAT IS THE HEART MADE OF?
HEARTBEAT
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RESPIRATION
HOW DOES AIR REACH THE LUNGS?
HOW DO THE AIRWAYS STAY CLEAN?
WHY DO WE NEED TO BREATHE?
HOW SOUND IS MADE IN THE LARYNX
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LUNGS
WHAT MAKES THE LUNGS EXPAND AND CONTRACT?
HOW IS OUR BREATHING CONTROLLED?
HOW BREATHING WORKS
GAS EXCHANGE
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NERVOUS SYSTEM
WHAT IS A NERVE?
HOW DO NEURONS WORK?
ARE ALL NEURONS THE SAME?
WHAT IS A REFLEX ACTION?
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BRAIN
WHY IS THE HUMAN BRAIN SPECIAL?
WHAT IS THE BRAIN MADE OF?
HOW DOES THE BRAIN WORK?
BRAINWAVES
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EYE
WHAT IS THE PUPIL?
HOW THE EYE FOCUSES
WHY DO WE HAVE TWO EYES?
HOW DO WE SEE IN COLOR?
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EAR
HOW DOES SOUND TRAVEL THROUGH THE EAR?
WHAT HAPPENS IN THE COCHLEA?
HOW DO EARS HELP US BALANCE?
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MOUTH
WHY IS THE MOUTH ALWAYS WET?
WHAT HAPPENS TO FOOD IN THE MOUTH?
TASTE BUDS
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NOSE
WHY DO WE BREATHE THROUGH THE NOSE?
HOW DOES THE NOSE DETECT SMELLS?
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TEETH
WHAT ARE TEETH MADE OF?
WHY DO TEETH DECAY?
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DIGESTION
HOW DOES THE STOMACH WORK?
WHERE DOES FOOD GO AFTER THE STOMACH?
WHY IS THE SMALL INTESTINE SO LONG?
HOW IS FOOD ABSORBED?
WHY DON’T THE DIGESTIVE ORGANS DIGEST THEMSELVES?
HOW DOES FOOD MOVE ALONG THE DIGESTIVE SYSTEM?
WHAT HAPPENS IN THE LARGE INTESTINE?
THE TIMETABLE OF THE DIGESTIVE SYSTEM
ENZYMES
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LIVER
WHAT IS INSIDE THE LIVER?
HOW DOES BLOOD GET TO THE LIVER?
WHY IS THE LIVER A FACTORY?
WHAT IS BILE?
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HORMONES
HOW DO HORMONES WORK?
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KIDNEYS
WHAT IS INSIDE A KIDNEY?
WHY DOES BLOOD NEED CLEANING?
WHERE DOES WASTE GO?
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REPRODUCTION
WHERE DO SEX CELLS FORM?
HOW DOES AN EMBRYO FORM?
WHERE DOES THE EMBRYO DEVELOP?
HEREDITY
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GROWTH
HOW DOES A BABY GROW?
WHAT HAPPENS AS CHILDREN GROW?
HOW DO GIRLS CHANGE AT PUBERTY?
HOW DO BOYS CHANGE AT PUBERTY?
WHAT HAPPENS WHEN PEOPLE GROW OLD?
BRAIN AND SKULL DEVELOPMENT
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HEALTH
WHAT ARE THE MAJOR HEALTH ISSUES IN THE WORLD TODAY?
HOW DOES LIFESTYLE AFFECT HEALTH?
LIFE EXPECTANCY
NUTRITION
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DISEASE
WHAT ARE BACTERIA AND VIRUSES?
WHAT ARE GENETIC DISEASES?
WHY DO SOME PEOPLE SUFFER FROM ALLERGIES?
WHAT IS CANCER?
MEDICINE
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Copyright © 2007 Dorling Kindersley

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