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