Inside the Human Mouth:

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Inside the Human Mouth
Incisers Canine Premolar Molars
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Esophagus
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Fundus
Lesser Curvature
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Greater Curvature
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Pylorus
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The Stomach is

• J-shaped
• located in the upper left side of the abdomen.
• about 10 inches (25 centimeters) long and can
  easily expand to hold as much as 1 quart (0.9
  liter) of food.
• is composed of four layers.
• The innermost layer, called the mucosa, is
  honeycombed with millions of glands that secrete
  mucus, acid, and enzymes. The mucus forms a
  mucous lining that protects the stomach from the
  corrosive action of the gastric juices, which
  break down food.
• The second layer of the stomach, called the
  submucosa, is composed of connective and elastic
  tissue containing nerves and blood and lymph
  vessels.
• The third layer contains longitudinal, circular,
  and oblique sets of smooth muscles that enable
  the stomach to churn, mix, and move food.
• The fourth layer, known as the serosa, connects
  the muscles to the peritoneum, the outer covering
  of the stomach.

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Digestive enzymes from the pancreas and bile from
the liver act on the chyme in the duodenum. These
enzymes include pancreatic lipase, which breaks
down fats into glycerol and fatty acids
pancreatic amylase, which continues the breakdown
of starches and most other carbohydrates into
disaccharides and trypsin and erepsin, which
break down whole and partially digested proteins
(proteoses and peptones) into amino acids, the
end products of protein digestion.
Liver and Pancreatic Function
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The human pancreas is an amazing organ with two
main functions 1 to produce pancreatic
endocrine hormones (e.g., insulin glucagon)
which help regulate many aspects of our
metabolism and 2, to produce pancreatic
digestive enzymes.
Bile is essential for emulsifying large fat
globules into smaller ones that are more easily
digested by pancreatic lipase. In addition,
intestinal juices are secreted by small glands in
the intestinal wall called the crypts of
Lieberkühn. Like the pancreatic juices,
intestinal juices contain enzymes that continue
the digestion of proteins and fats and also
contain three enzymes that break down
disaccharides into glucose, galactose, and
fructose (simple sugars).
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Spleenic Flexure
Transverse Colon
Hepatic Flexure
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Ascending colon
Descending colon
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Appendix
Sigmoid Colon
Rectum