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101 Facts About the Human Body

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By Radhika Venkata

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"101 Facts About the Human Body" by Radhika Venkata

Page 2 of 107

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Terms of Use

This Electronic book is Copyright © 2009. All rights reserved. No part of this

book may be reproduced, stored in a retrieval system, or transmitted by any

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without written permission from the copyright holder(s).

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This book is intended for adults that want to share the content with their

children. All access to this book by children should be with the permission

and direct supervision of a responsible adult person.

Disclaimer

The advice contained in this material might not be suitable for everyone.

The author only provides the material as a broad overview about an

important subject. The author obtained the information from sources

believed to be reliable and from her own personal experience, but she neither

implies nor intends any guarantee of accuracy.

All claims made for any product, treatment or other procedure that is

reported in this book is only the author's personal opinion . You must do you

own careful checking with your own medical advisor and other reputable

sources so that your own particular circumstances can be taken into account

on any matter that concerns your health or that of others.

Research is constantly changing theories and practices in this area.

The content of this book is not any sort of professional medical advice,

diagnosis or treatment. Always seek the advice of your physician or other

qualified health care provider with any questions you may have regarding a

medical condition because they have the necessary knowledge of your own

particular circumstances and state of health.

Never disregard professional medical advice or delay in seeking it for any

reason.

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"101 Facts About the Human Body" by Radhika Venkata

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The author, publisher and distributors never give legal, accounting, medical

or any other type of professional advice. The reader must always seek those

services from competent professionals that can review their own particular

circumstances.

The author, publisher and distributors particularly disclaim any liability, loss,

or risk taken by individuals who directly or indirectly act on the information

contained herein. All readers must accept full responsibility for their use of

this material.

All pictures used in this book are for illustrative purposes only. The people in

the pictures are not connected with the book, author or publisher and no link

or endorsement between any of them and the topic or content is implied, nor

should any be assumed. The pictures are only licensed for use in this book

and must not be used for any other purpose without prior written permission

of the rights holder.

Some Images © 2009 Jupiter Images

All other Images © 2009 Radhika Venkata

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"101 Facts About the Human Body" by Radhika Venkata

Page 4 of 107

Contents

Please Read This First..................................................................................2

Terms of Use ...........................................................................................................................2

Disclaimer.................................................................................................................................2

Contents............................................................................................................4

About the Author ...........................................................................................9

Our Eyes and Vision....................................................................................10

Why do we have to constantly blink our eyes? ..................................................10

Can our Eye be compared to a Camera? ................................................................11

Why do our eyes water when we cut onions?.....................................................13

Why can't we see well when we go from bright light to a dark room? ....13

Why are people with Color blindness advised not to drive vehicles?........14

Can we walk straight with our eyes closed?........................................................14

How do our eyes interpret a moving object in a movie? ................................15

Where do we get the water for our tears when we cry? ................................15

Why are tears useful? ...................................................................................................16

Is crying necessary? ......................................................................................................16

What is the advantage of having two eyes? ........................................................17

How do our eyes distinguish different colors?....................................................17

What determines your eye color? ............................................................................19

What is long-sightedness? ..........................................................................................19

What is Short sightedness? ........................................................................................20

What is Astigmatism?....................................................................................................21

Our Ears and Hearing.................................................................................23

Why do some people get pain in their ears in an aircraft? ............................23

Is there a Hammer in our body? ...............................................................................24

How do we hear?.............................................................................................................25

Taste.................................................................................................................28

Why can't we appreciate tastes if our mouth is dry?.......................................28

Which part of the tongue is sensitive to different tastes?.............................28

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"101 Facts About the Human Body" by Radhika Venkata

Page 5 of 107

Smell.................................................................................................................29

Why can't we smell the same odour after a while? ..........................................29

Blood and Circulation.................................................................................30

Why should we avoid sitting too long? ..................................................................30

Why do you sometimes feel dizzy when you get up?.......................................31

What are the Odd Artery and the Odd Vein in our bodies?............................31

How does our body stop bleeding from a cut?....................................................34

Which organs in our body get the most blood? ..................................................35

Why does your heart beat faster when you run?...............................................36

Why is Blood red in Color? ..........................................................................................36

What do I need to know about Hemoglobin? ......................................................37

Who are the universal donors and universal recipients? ...............................38

Why do we feel 'pins and needles' are in our arms and legs?......................39

Breathing and Related Topics.................................................................41

Why can't people breathe and swallow at the same time? ...........................41

Cells ..................................................................................................................42

Are all cells in our body the same?..........................................................................42

Which specialized part of a cell is called the 'Powerhouse”? .......................43

Can the cells in our body talk to each other? ......................................................44

Digestion and Nutrition.............................................................................47

Why are some of our teeth shaped differently from others?........................47

Why do the 4 types of teeth have different shapes?........................................47

Should you take water soluble vitamins every day? ........................................48

Why do we have to chew our food properly? ......................................................49

Why do sportsmen eat bananas during their strenuous activity? ..............49

Why can't some people eat dairy products? ........................................................50

Where do we get our energy if we skip our breakfast and lunch? .............51

Why do you hear growling sounds when you are hungry?............................51

What causes bad breath?.............................................................................................52

Is belching inevitable after eating?.........................................................................53

Skin and Related Topics............................................................................54

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"101 Facts About the Human Body" by Radhika Venkata

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Why do we get pimples? ..............................................................................................54

Why does our skin wrinkle in our old age? ..........................................................54

What is the largest organ of the human body? ..................................................54

Why is clipping our nails painless though it is growing tissue? ..................55

Why are boils dangerous in the central area of the face?..............................56

Why do hot things burn the skin? ............................................................................56

Why does burnt skin become white? ......................................................................56

Why do we get “goose bumps”? ...............................................................................57

Why do our lips, palms and soles get chapped in cold weather?................58

Hygiene and Related Topics ....................................................................59

Why should we wash our hands with soap before eating?............................59

How are germs killed in our body? ..........................................................................59

Skeleton and Related Topics ...................................................................62

Can people get shorter in the evenings?...............................................................62

Why are bone fractures more common in old people? ....................................62

What is a collar bone?...................................................................................................63

Why are our bones so strong? ...................................................................................63

Why is the first vertebra called the 'Atlas'? .........................................................64

What are Sesamoid bones?.........................................................................................65

What might happen if we didn't have a skeleton in our body?....................66

What does, “Muscles act as Agonists and Antagonists to carry

movements” mean? .......................................................................................................67

Why does a child have more bones in their body than an adult?................68

What is the smallest bone in the body?.................................................................69

Internal Organs and Related Topics.....................................................71

What is 'The Master gland' in the human body? ................................................71

Why is our urine sometimes yellow? ......................................................................71

How does a doctor measure your heart rate? .....................................................72

How and why does your doctor listen to our heart sounds?.........................73

Are there millions of germs in our intestines?....................................................75

How are waste products removed from the body? ...........................................76

Are stones actually formed in the body?...............................................................76

Is the absorption surface of a small Intestine as big as a Tennis court? 77

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"101 Facts About the Human Body" by Radhika Venkata

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Can the acid in our stomach dissolve razorblades? ..........................................78

What is an Appendix?....................................................................................................79

Health and Related Topics .......................................................................81

Is sun light enough for your daily dose of Vitamin D? ....................................81

Should you take water soluble vitamins every day? ........................................81