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All living things are made of tiny building blocks called cells These are Smooth muscle cells CONTENTS YOUR GROWLING GUTS THE MIRACULOUS MOUTH CHEN ON THIS 10 JOURNEY DOWN THE ESOPHAGUS 12 THE BODY S FOOD MIXER 14 THE LONG SMALL INTESTINE _ Smooth muscle cells join together to form smooth muscle tissue YOUR LOVELY LIVER THE LARGE INTESTINE DIGESTIVE WIND 20 of smor 22 Layers A ther with DIGESTIVE WASTE STOOLS form ses to 24 PROCESSING LIQUIDs 26 VOMIT AND OTHER PROBLEMS muscle tissues join other tissue types the stomach MAINTENANCE AND SERVICING 28 30 GUTSY WORDS DIGEST THIS INFORMATION 31 32 INDEX The stomach organ in your di system As food through this nutrients are taken out for your body to use is a lar ligestive
S GROWLING GUTS BRILLIANT BODY FACT Did you realize that you are basically hollow There's a tube running RIGHT THROUGH your body It starts in your mouth and finishes at your bottom The tube is your digestive system Foods and drinks go in one end and something much less pleasant comes out of the other In your lifetime your stomach digests nearly 1ooooo meals Is it really just a tube Not really no When you started life it was a nutrients are used for energy movement growth and repair of damaged parts Having gotten as much useful material as possible from your food your digestive system also gets rid of anything that isn't needed tube But as your body grew your digestive system became more complicated It developed muscular walls for moving food downward It widened in places to form your stomach and large intestine Little valves appeared to stop food from traveling the wrong way through the system It also BUT TRUE T STRANGE BUT developed loops of tube that link to your circulatory system An average person from a wealthy country eats roughly 110 231 pounds 50 tons of food that s 25 adult white rhinos during his or her lifetime He or she also drinks about 13 208 gallons 50 000 L of fluid What is a digestive system for Your digestive system takes nutrients from food and passes them on to your circulatory system for distribution to cells around the body These
How does it work LOOK CLOSE The first stage of digestion is for food to be THE DIGESTIVE SYSTEM broken into smaller pieces which can move more easily through the body If you've ever swallowed a too big mouthful you'll know why this is a good idea This process is called mechanical digestion mouth esophagus At the same time as your food is broken into smaller pieces chemical digestion starts Chemicals called enzymes speed up the breakdown of food into smaller and smaller Stomach liver parts Finally the nutrients from food are small enough to pass into the blood Digestion begins in your mouth when you chew food intestine intestine anUS DID YOU KNOW nin people don't h Smaller stomachs O see for yourself VAR lere Iow is no relation between he in you are and the size of your stomach around the size of a fist and Pryone's stomach is stretches depending is put into it Eve How much can a stomach hold Find a half gallon 2 L bottle This holds the same volume as a completely full adult stomach Now put five tablespoons of water into the bottle This is about 75 millileters which is the average volume of a completely empty stomach on whe at
