Mucosal Digestion and Absorptive Function

Table of Contents

1. Amplification of surface area of human small intestine
2. Villus-crypt distribution of cell function
3. Intestinal membrane glycoprotein synthesis
4. Synthesis and processing of sucrase-isomaltase
5. Intestinal glycoprotein degradation
6. Functional comparison small and large intestine
7. Multiple digestive-absorptive processes in the small intestine
8. Major areas of absorption of nutrients after a meal
9. Mechanisms of transport: passive diffusion
10. Mechanisms of transport: carrier-mediated (facilitated diffusion)
11. Mechanisms of transport: active transport of glucose is Na dependent
12. Digestive enzymes act at different sites
13. Intraluminal starch digestion
14. Disaccharide digestion precedes monosaccharide absorption
15. Different modes of carbohydrate digestion-absorption
16. Preferred structure for active transport of monosaccharide
17. Dietary fiber
18. Surface digestion provides absorptive advantage for glucose
19. Lactase activity is rate limiting in lactose digestion-absorption
20. Distribution of disaccharides along intestine in normal subjects
21. Fasting alters mucosal disaccharides activity
22. Diet affects mucosal enzyme activity: "Adaption"
23. Physiologic basis of lactose tolerance test
24. Interpretations of lactose tolerance test
25. Factors influencing occurence of symptoms with lactase deficiency
26. Several factors determinig symptoms in lactose intolerance
27. Consequences of low intestinal lactase levels
28. Examples of defects in carbohydrate digestion and absorption
29. Glucose-galactose malabsorption: a selective monosaccharide absorptive defect
30. Variety of digestive-absorptive processes for protein
31. Multiplicity of digestion-absorption pathways ensures adequate protein absorption
32. Initial steps in protein-digestive absorption
33. Aminooligopeptidase is the major brush border peptidase
34. Preferred structure for active amino acid transport
35. Enhanced amino acid absorption from some dipeptides
36. Defect in absorption of basic amino acids occur in Cystinuria
37. Defect in absorption of neural amino acids occur in Hartnup Disease
38. Peptide absorption is intact in Hartnup Disease
39. Selective amino acid transport defects occur in Hartnup Disease and Cystinuria
40. Intestinal digestive-absorptive functions are not equally susceptible to mucosal injury
41. Effects of injury on digestive absorptive function are not uniform
42. Villous hypertrophy and increased transport occur following intestinal resection
43. Luminal nutrients preserve small bowel mass
44. Small intestinal cell protein is spared during protein starvation
45. Luminal nutrients required to induce "Adaptation" following intestinal resection
46. Gastric surgery can result in reactive hypoglycemia
47. Factors affecting plasma glucose levels after oral ingestion
48. Fate of D-xylose in the body
49. Alterations in urinary D-xylose excretion in disease
50. D-xylose test helpful in distinguishing maldigestion form malabsorption
51. Consequences of intestinal resection reflect organ function

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