Digestive System

1
Digestive System

• by
• Conagher

2
The MAIN function of the Digestive System is

• Digest food eaten
• Bring nourishment to the body

3
Main parts of the Digestive System

• Mouth
• Tongue
• Esophagus
• Stomach
• Small Intestine
• Large Intestine
• The liver, gall bladder, and pancreas add enzymes
  to the food traveling from the stomach
  

4
Mouth

• The mouth is the first stage of the digestive
  system.
  
• The saliva helps soften the food up so you can
  swallow.
  
• The teeth chew the food to make it smaller so you
  can swallow without choking
  

5
Tongue

• Taste buds to taste the food eaten
• Primary organ of taste
• Strongest muscle in the human body
• Aids in chewing food and speech
• Taste buds
• 5 taste sensations
• - salty
• - bitter
• - savory
• - sweet
• - sour

6
Esophagus

• The esophagus is the organ into which the
  swallowed food is pushed.
  
• It connects the throat above with the stomach
  below.
  
• At the junction of the esophagus and stomach,
  there is a ring like valve closing the passage
  between the two organs.
  
• However, as the food approaches the closed ring,
  the surrounding muscles relax and allow the food
  to pass.

7
Stomach

• The stomach has acid that helps digest the food.
• Muscles in the stomach
• After this the food is separated it goes into the
  small intestine.

8
Small Intestines

• It is part of the Gastrointestinal tract between
  the stomach and the large intestines
  
• It is where most of the digestion takes place
• It is made up of 3 parts
• Duodenum
• Jejunum
• Ileum

9
Large Intestines

• AKA the colon
• Last part of the digestive system
• Takes 12-25 hours to complete digestion
• Absorbs remaining water from indigestible food
  matter
  
• Stores unusable food matter (waste)
• Eliminates waste from the body through the rectum

10
A working Digestive System
11
Keeping the Digestive system healthy

• Eat healthy
• Eat more fiber, fruits, and vegetables
• Eat less processed foods
• Avoid poor eating habits
• - eating too fast
• - skipping meals

12
Diseases of the Digestive System

• Crowns disease
• Indigestion
• Heartburn
• Ulcers
• Gastrointestinal bleeding
• Chronic diarrhea
• Constipation
• Cancers
• - colon
• - esophageal
• - intestinal
• - stomach
• - colorectal
• - rectal

13
5 interesting facts of the Digestive System

• Many miles of intestines rolled up in your body
• How food is digested and turned into nutrients
  for the body
  
• Saliva softens your food as you chew
• That the stomach hold Hydrochloric Acid and uses
  it to kill bacteria and digest food
  
• You do not want to eat fast.