Transcript Document

The Digestive System
Overview of the Digestive System
Digestive Tract:
Mouth, pharynx, and
esophagus,
stomach, small
intestine, and large
intestine (colon)
Accessory Organs:
Teeth, tongue,
salivary glands,
pancreas, liver, and
gallbladder
Digestive system histology
Digestive system histology
Identify:
• Mucosa
• Submucosa
• Muscularis
• Serosa or
adventitia?
Adventitia or serosa?
Adventitia
(connective
tissue around
organs
superior to
diaphragm)
Serosa =
visceral
peritoneum
Digestive system histology
Oral Cavity
The Pharynx
• Nasopharynx
• Oropharynx
• Laryngopharynx
Salivary Glands
The Esophagus
Stomach
Stomach
Duodenum and Related Organs
Small Intestine – Gross Anatomy
• Three
subdivisions:
duodenum,
jejunum, and ileum
Gross Anatomy of Large Intestine
•Cecum
•Appendix
•Ascending
•Transverse
•Descending
•Sigmoid colon
•Rectum
•Anus
Pancreas and Gallbladder
Gallbladder
• Stores and concentrates bile
• Expels bile into duodenum
• Bile emulsifies fats
Visceral Surface of the Liver
Microscopic Anatomy of Liver
Mesenteries
•
Superficial view of
the abdominal
organs
Mesenteries
•
Greater omentum and
transverse colon
reflected
Mesenteries
•
Sagittal section
through the
abdominopelvic cavity