The Digestive System. Overview of the Digestive System Digestive Tract: Mouth, pharynx, and...

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The Digestive System

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Transcript of The Digestive System. Overview of the Digestive System Digestive Tract: Mouth, pharynx, and...

Page 1: The Digestive System. Overview of the Digestive System Digestive Tract: Mouth, pharynx, and esophagus, stomach, small intestine, and large intestine (colon)

The Digestive System

Page 2: The Digestive System. Overview of the Digestive System Digestive Tract: Mouth, pharynx, and esophagus, stomach, small intestine, and large intestine (colon)

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

Page 3: The Digestive System. Overview of the Digestive System Digestive Tract: Mouth, pharynx, and esophagus, stomach, small intestine, and large intestine (colon)

Digestive system histology

Page 4: The Digestive System. Overview of the Digestive System Digestive Tract: Mouth, pharynx, and esophagus, stomach, small intestine, and large intestine (colon)

Digestive system histology

Identify:

•Mucosa

•Submucosa

•Muscularis

•Serosa or adventitia?

Page 5: The Digestive System. Overview of the Digestive System Digestive Tract: Mouth, pharynx, and esophagus, stomach, small intestine, and large intestine (colon)

Adventitia or serosa?

Adventitia (connective tissue around organs superior to diaphragm)

Serosa = visceral peritoneum

Page 6: The Digestive System. Overview of the Digestive System Digestive Tract: Mouth, pharynx, and esophagus, stomach, small intestine, and large intestine (colon)

Digestive system histology

Page 7: The Digestive System. Overview of the Digestive System Digestive Tract: Mouth, pharynx, and esophagus, stomach, small intestine, and large intestine (colon)

Oral Cavity

Page 8: The Digestive System. Overview of the Digestive System Digestive Tract: Mouth, pharynx, and esophagus, stomach, small intestine, and large intestine (colon)

The Pharynx

• Nasopharynx

• Oropharynx

• Laryngopharynx

Page 9: The Digestive System. Overview of the Digestive System Digestive Tract: Mouth, pharynx, and esophagus, stomach, small intestine, and large intestine (colon)

Salivary Glands

Page 10: The Digestive System. Overview of the Digestive System Digestive Tract: Mouth, pharynx, and esophagus, stomach, small intestine, and large intestine (colon)

The Esophagus

Page 11: The Digestive System. Overview of the Digestive System Digestive Tract: Mouth, pharynx, and esophagus, stomach, small intestine, and large intestine (colon)

Stomach

Page 12: The Digestive System. Overview of the Digestive System Digestive Tract: Mouth, pharynx, and esophagus, stomach, small intestine, and large intestine (colon)

Stomach

Page 13: The Digestive System. Overview of the Digestive System Digestive Tract: Mouth, pharynx, and esophagus, stomach, small intestine, and large intestine (colon)

Duodenum and Related Organs

Page 14: The Digestive System. Overview of the Digestive System Digestive Tract: Mouth, pharynx, and esophagus, stomach, small intestine, and large intestine (colon)

Small Intestine – Gross Anatomy• Three

subdivisions:duodenum, jejunum, and ileum

Page 15: The Digestive System. Overview of the Digestive System Digestive Tract: Mouth, pharynx, and esophagus, stomach, small intestine, and large intestine (colon)

Gross Anatomy of Large Intestine

•Cecum

•Appendix

•Ascending

•Transverse

•Descending

•Sigmoid colon

•Rectum

•Anus

Page 16: The Digestive System. Overview of the Digestive System Digestive Tract: Mouth, pharynx, and esophagus, stomach, small intestine, and large intestine (colon)

Pancreas and Gallbladder

Page 17: The Digestive System. Overview of the Digestive System Digestive Tract: Mouth, pharynx, and esophagus, stomach, small intestine, and large intestine (colon)

Gallbladder• Stores and concentrates bile

• Expels bile into duodenum• Bile emulsifies fats

Page 18: The Digestive System. Overview of the Digestive System Digestive Tract: Mouth, pharynx, and esophagus, stomach, small intestine, and large intestine (colon)

Visceral Surface of the Liver

Page 19: The Digestive System. Overview of the Digestive System Digestive Tract: Mouth, pharynx, and esophagus, stomach, small intestine, and large intestine (colon)

Microscopic Anatomy of Liver

Page 20: The Digestive System. Overview of the Digestive System Digestive Tract: Mouth, pharynx, and esophagus, stomach, small intestine, and large intestine (colon)

Mesenteries

• Superficial view of the abdominal organs

Page 21: The Digestive System. Overview of the Digestive System Digestive Tract: Mouth, pharynx, and esophagus, stomach, small intestine, and large intestine (colon)

Mesenteries

• Greater omentum and transverse colon reflected

Page 22: The Digestive System. Overview of the Digestive System Digestive Tract: Mouth, pharynx, and esophagus, stomach, small intestine, and large intestine (colon)

Mesenteries

• Sagittal section through the abdominopelvic cavity


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The Digestive System. Organ groups of digestion Alimentary organs – Mouth – Pharynx – Esophagus – Stomach – Small and large intestine Accessory digestive.

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