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The Digestive System’s Main Organ
is The Stomach

Presentation By:

Samantha
The stomach is located between the
esophagus and the small intestines.
The stomach is a J-shaped muscular organ
that is composed of three parts:


Fundus which is the domed upper portion of the
stomach.



Body which is the main portion of the stomach.



Antrum which is the tapered distal end of the
stomach.
The Stomach Contains Two Sphincters
The two sphincters keep the inside of the stomach controlled.
The first sphincter is the esophageal which is located in the cardiac
region. This is a passage way leading to the stomach. The second
sphincter is the pyloric and it helps to assist emptying the mixture
into the small intestines.
The Many Functions of the Stomach:


Storing the food our body intakes.



Breaking the food down & churning into a liquidly substance
called chyme.



Peristalsis to contract & mixing enzymes to break down food.



Slowly emptying the mixture into the small intestines.
The Four Layers of the Stomach’s Wall


Mucosa



Submucosa



Muscularis Externa



The Peritoneal
Gastric Juices In The Stomach
Contain:
PRORENNIN

PEPSINOGEN

Hydrochloric acid triggers the inactive forms of
enzymes into active forms which are pepsin and
rennin.
The Absorption of The Stomach Lining


Water, when the body seems to be dehydrated



Medication



Amino Acids



10–20% of ingested ethanol such as alcohol



Caffeine
Common Problems


Gastroesophogeal reflux disease (GERD) is the most common
symptom of heartburn.



Gastritis the inflammation of the stomach lining.



Peptic ulcer is a sore on the lining of the stomach.
Summary
When the stomach is empty it resembles an unexpanded J-shaped
balloon. It's capable of expanding and contrasting to hold anything
from a snack to a seven-course meal.
The stomach is a crucial organ for digestion, the process of breaking
down food into its smallest particles so your body can absorb the
nutrients. The process of digestion requires:
 The mixing of food
 Movement through the digestive tract
 Chemical breakdown of the large molecules of food into smaller
molecules.

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Stomach Presentation

  • 1. The Digestive System’s Main Organ is The Stomach Presentation By: Samantha
  • 2. The stomach is located between the esophagus and the small intestines.
  • 3. The stomach is a J-shaped muscular organ that is composed of three parts:  Fundus which is the domed upper portion of the stomach.  Body which is the main portion of the stomach.  Antrum which is the tapered distal end of the stomach.
  • 4. The Stomach Contains Two Sphincters The two sphincters keep the inside of the stomach controlled. The first sphincter is the esophageal which is located in the cardiac region. This is a passage way leading to the stomach. The second sphincter is the pyloric and it helps to assist emptying the mixture into the small intestines.
  • 5. The Many Functions of the Stomach:  Storing the food our body intakes.  Breaking the food down & churning into a liquidly substance called chyme.  Peristalsis to contract & mixing enzymes to break down food.  Slowly emptying the mixture into the small intestines.
  • 6. The Four Layers of the Stomach’s Wall  Mucosa  Submucosa  Muscularis Externa  The Peritoneal
  • 7. Gastric Juices In The Stomach Contain: PRORENNIN PEPSINOGEN Hydrochloric acid triggers the inactive forms of enzymes into active forms which are pepsin and rennin.
  • 8. The Absorption of The Stomach Lining  Water, when the body seems to be dehydrated  Medication  Amino Acids  10–20% of ingested ethanol such as alcohol  Caffeine
  • 9. Common Problems  Gastroesophogeal reflux disease (GERD) is the most common symptom of heartburn.  Gastritis the inflammation of the stomach lining.  Peptic ulcer is a sore on the lining of the stomach.
  • 10. Summary When the stomach is empty it resembles an unexpanded J-shaped balloon. It's capable of expanding and contrasting to hold anything from a snack to a seven-course meal. The stomach is a crucial organ for digestion, the process of breaking down food into its smallest particles so your body can absorb the nutrients. The process of digestion requires:  The mixing of food  Movement through the digestive tract  Chemical breakdown of the large molecules of food into smaller molecules.