DIGESTIVE SYSTEM

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DIGESTIVE SYSTEM

• Priya
• Carmina
• Javier

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Human Digestive system

• Esophagus
• Liver
• Gall Bladder
• Large Intestine
• Appendix
• Stomach
• Pancreas
• Small Intestine
• Rectum

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Mouth

• The digestive system starts in the mouth.
• Teeth is hard, bonelike structures in the mouth.

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Physical Digestion

• The delightful smell and taste of the food
  together with the chewing activity stimulate the
  production of saliva. Physical digestion begins
  in the mouth.

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Chemical Digestion

• Reacts with chemical.
• Takes place in stomach, mouth and some other
  parts of digestive system.

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small intestine complete all digestion and
provide absorption of digested nutrients into the
bloodstream.
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Salivary glands

• Salivary glands are three pairs of glands in the
  mouth that secrete saliva.

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The Esophagus

• It is 9 to 10 inches.
• It connects Mouth and Stomach.

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Stomach

• Work on Protein, breaking it down into
  polypeptides.
• Hydrochloric acid is secreted into the stomach.
• Pepsin is a digestive enzyme secreted by the
  stomach.
• Chyme is food mixed with stomach chemicals,
  expelled by the stomach into the duodenum.

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Liver

• Manufactures the vitamin.
• It distribute nutrients form food to the other
  organs.

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Small Intestine

• It is 20ft long.
• It is divided into three parts Duodenum, the
  Jejunum, and the ileum.
• Most digestion takes place in small intestine.
• Villi is a fingerlike projections that line the
  small intestine and other membranous surface.

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Large Intestine

• It transports waste material through rectum and
  then anus.
• It has close end coming of it, it is called
  appendix.

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Pancreas

• It stores bile and release it into stomach and
  small intestine.
• Pancreatic juice is the mixture of the digestive
  secretions produced by the pancreas.
• Peristalsis is a wavelike contractions of smooth
  muscles that move the contents of tubular organ
  along.

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Gall Bladder

• Bile leaves the gall bladder and goes to the
  small intestine when it needs to.
• It is located under Liver.

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Difficulties in the Digestive System

• Gall stones- stones develop in the gall bladder.
• Get the gall stones removed.
• Appendicitis- Food finishes its journey through
  the digestive system in the small and large
  intestine.
• Treatment Appendix can be removed.