THE DIGESTIVE SYSTEM

1
THE DIGESTIVE SYSTEM

• Chapter 23

2
Divisions of the Digestive Tract
3
Digestive Processes

• Ingestion
• Propulsion
• Mechanical digestion
• Chemical digestion
• Absorption
• Defecation

4
Layers of the GI Tract
5
Anatomy of the Mouth
6
Anatomy of the Tongue
7
Salivary Glands
8
Teeth
9
Teeth
10
Deglutition and the Pharynx
11
Esophagus
12
Peristalsis
13
Microscopic Anatomy of the Esophagus
14
Anatomy of the Stomach
15
Microscopic Anatomy of the Stomach
16
Digestive Processes of Stomach

• Gastric Secretion
• Gastric Motility
• Gastric Emptying

17
Regulation of Gastric Secretion
18
Gastric Motility and Emptying
19
Divisions of the Small Intestine
20
Peristalsis versus Segmentation
Peristalsis
Segmentation
21
Microscopic Anatomy of the Small Intestine
22
Microscopic Anatomy of the Small Intestine
Microscopic Anatomy of Small Intestines
23
Regions of the Small Intestine
24
Anatomy of the Liver
25
Microscopic Anatomy of the Liver
26
Microscopic Anatomyof the Liver
27
Function and Regulation of Bile
28
Anatomy of the Pancreas
29
Function and Regulation of Pancreatic Juices
30
Anatomy of the Large Intestine
31
Microscopic Anatomy of the Large Intestine
32
Anatomy of the Rectum
33
Summary of Digestion
34
Summary of Digestion
35
After Digestion Absorption
Protein
Fats
36
Homeostatic Imbalances of the Digestive Tract

• Hepatitis
• Cirrhosis
• Gallstones
• Jaundice
• Appendicitis
• Diverticulitis
• Diarrhea
• Constipation
• Irritable bowel syndrome
• Crohns disease

• Peritonitis
• Mumps
• Halitosis
• Impacted wisdom teeth
• Cavities
• Heartburn
• Hiatus hernia
• Gastric ulcers
• Enteritis