To Eat or Not To Eat

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To Eat or Not To Eat!
Digestive System Project
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Have you ever thought about what happens to the
food you eat?

• Entering the mouth, the food is grinded by the
  teeth into smaller pieces. This is mechanical
  digestion.
• Mechanical digestion is a type of digestion which
  changes the size and shape by a structure. In the
  mouth the food is being grinded by the teeth.

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The Subway Station

• Your saliva contains salivary amylase, an enzyme
  that breaks carbohydrates down into sugars.
• When you swallow the food through your throat,
  your tongue pushes the food backwards into the
  pharynx. The pharynx carries the food down to the
  esophagus.

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The Esophagus Subway
Once the food reaches the esophagus after going
through the throat or pharynx, it is carried down
to the stomach through a special process called
peristalsis. Peristalsis is when the muscles at
the top of the esophagus move the food
voluntarily, and the rest of the esophagus moves
the food down to the stomach involuntary.
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Stomach Entrance

• The food enters the stomach where it is churned
  chemically with gastric juice. After being
  churned for more than several hours its next
  destination is the small intestine.

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Arriving at the Small Intestine!

• There are 3 parts to the small intestine the
  duodenum, the jejenum, and the ileum. In the
  duodenum, the acid chyme from the stomach mixes
  with the digestive solutions as a chemical
  digestion to break down sugars, proteins, and
  fat.
• The jejunum and the ileum absorb nutrients and
  water. To enter the body, nutrients in the small
  intestine must pass through the lining of the
  digestive track. Nutrients are absorbed across
  the lining of the intestine and then across the
  lining of the blood vessels. The absorption of
  nutrients get into our blood.

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Please Pass the Pancreas Chyme

• The pancreas gives acid chyme to the food in the
  small intestine in order to balance the stomach
  chyme.

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Let the Liver live! Go Gallbladder!

• The liver produces bile that emulsifies fat and
  wastes which helps the digestion and absorption
  of fats.
• Emulsification is when bile salts from the
  gallbladder coat fat droplets and keep them from
  combining.

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Last Stop before EXIT The Large Intestine

• A sphincter from the small intestine controls the
  movement of the wastes from the food. Extracting
  the water from the food, it is given to the body
  to secrete in the bloodstream.
• The large intestine contains ecoli which are
  bacteria that product gases to process energy.

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WHOOOOOOO!

• Then it goes through your rectum and anus, then
  you know what happens.
• Our body needs macromolecules in order to live,
  and survive. Macromolecules we need are proteins,
  carbohydrates, sugars, and lipids (fats). Theres
  a good and bad to all four of those
  macromolecules. Eat wisely and live long.

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