Transcript Slide 1

Digestive System
Azami PHD
Digestive System Anatomy
• Digestive tract
– Alimentary tract or
canal
– GI tract
• Accessory
organs
– Primarily glands
• Regions
–
–
–
–
–
–
–
Mouth or oral cavity
Pharynx
Esophagus
Stomach
Small intestine
Large intestine
Anus
Oral Cavity
• Mouth or oral cavity
– Vestibule: Space
between lips or
cheeks and alveolar
processes
– Oral cavity proper
• Lips (labia) and
cheeks
swallowing
Pharynx and Esophagus
Peritoneum
• Peritoneum
– Visceral: Covers
organs
– Parietal: Covers
interior surface of
body wall
– Retroperitoneal:
Behind peritoneum
as kidneys, pancreas,
duodenum
Mesenteries
• Mesenteries
– Routes which vessels
and nerves pass from
body wall to organs
Stomach Anatomy
• Openings
– Gastroesophageal:
To esophagus
– Pyloric: To
duodenum
• Regions
–
–
–
–
Cardiac
Fundus
Body
Pyloric
Small Intestine
• Site of greatest amount
of digestion and
absorption
• Divisions
– Duodenum
– Jejunum
– Ileum
Jejunum & ileum
Pancreas
• Anatomy
– Endocrine
• Pancreatic islets
produce insulin and
glucagon
– Exocrine
• Acini produce digestive
enzymes
– Regions: Head, body,
tail
Pancreas
Large Intestine