Live Science How Your Body Works - July 2019

Live Science: How Your Body Works - July 2019

English | 150 pages | PDF | 113 mb



If you've ever wondered how the trillions of cells in your body work together to keep you alive, Live Science has the answers. Throughout this collection, you'll find out how complex networks of neurons control our thoughts and actions, and how specialised systems perform vital functions such as keeping our blood pumping, making our muscles move, and protecting us from harm.

In this book you'll also discover some of the weird and wonderful things about our bodies that science is yet to explain: from the existential - like why we laugh, dream and cry - to the trivial, like why a protein-packed meal can lead to 'meat sweats'. Read on to gain a new appreciation for the human body, and everything that makes you, well, you!



THE HUMAN BODY

AN INTRODUCTION TO EVERYTHING THAT MAKES UP YOU!

SYSTEM & ORGANS

14 THE SKELETAL SYSTEM

20 WHY DO KNUCKLES CRACK?

21 WHY ARE SOME PEOPLE 'DOUBLE JOINTED'?

22 THE MUSCULAR SYSTEM

28 WHY YOU GET SORE AFTER WORKING OUT

29 DOES 'MUSCLE MEMORY' EXIST?

30 THE CIRCULATORY SYSTEM

36 DIFFERENT BLOOD TYPES

37 HOW MUCH BLOOD DO YOU HAVE?

38 BLOOD PRESSURE

40 THE RESPIRATORY SYSTEM

46 THE DIGESTIVE SYSTEM

50 THE SCIENCE OF HUNGER

58 THE TRUTH ABOUT 'MEAT SWEATS'

60 THE ENDOCRINE SYSTEM

66 THE NERVOUS SYSTEM

72 WHY DOES THE BRAIN HAVE FOLDS?

73 YOUR SECOND BRAIN

74 A CLOSER LOOK AT THE EYES

76 THE REPRODUCTIVE SYSTEM

80 THE LYMPHATIC SYSTEM

84 THE IMMUNE SYSTEM

88 THE SKIN: YOUR LARGEST ORGAN

THE BIZARRE BODY

118 25 WEIRD THINGS HUMANS DO EVERY DAY AND WHY

126 5 STRANGE FACTS ABOUT MEMORY

128 SLEEPTALKING EXPLAINED

129 WHAT MAKES TEETH GO YELLOW?

130 WHY DON'T BABIES BLINK VERY MUCH?

132 6 STRANGE THINGS THE GOVERNMENT KNOWS ABOUT YOUR BODY

136 WHAT ARE PHANTOM SMELLS?

137 WHY DO WE SHIVER WHEN WE'RE COLD?

138 WHY CAN'T WE REMEMBER OUR DREAMS?

140 MYSTERIES OF THE MIND

HEAD-TO-TOE TRIVIA

92 DNA AND CHROMOSOMES

96 HOW YOUR BODY MAKES NEW CELLS

100 A'NEW'ORGAN: THE INTERSTITIUM

101 DOES THE BODY REALLY REPLACE ITSELF EVERY 7YEARS?

102 THE FIVE SENSES

106 WHAT DOES FAT DO?

107 WHY DO WE SLEEP?

108 THE SCIENCE OF FEAR

110 WHY IS 98.6°F'NORMAL' BODY TEMPERATURE?

111 HOW A HANGOVER AFFECTS YOUR BRAIN

112 FACIAL EXPRESSIONS EXPLAINED

114 7 SURPRISING EVERYDAY HEALTH RISKS