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Learning Objectives - Digestion
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- Describe the processes of digestion, absorption, motility and secretion throughout the digestive system
- Describe the neuroendocrine controls of the cephalic phase, gastric, and intestinal phases of digestion
- Describe the processes of digestion and absorption of carbohydrates, proteins, and fats
- Differentiate long and short reflexes
- Identify the components and function of saliva
- Describe the process of swallowing
- Describe the feedforward controls of salivary and gastric secretions and gastric motility
- Identify the function of the secretory products from mucous, chief, parietal, G, D, and enterochromaffin-like cells
- Explain the molecular basis of gastric acid production, the regulation of acid production, and the treatment options for acid reduction, including proton-pump inhibitors
- Differentiate peristalsis and segmentation
- Describe the role of bicarbonate throughout digestion
- Describe the physiologic response to the arrival in the duodenum of: acidic high osmolarity chyme, carbohydrates, fats
- Identify the regulatory hormones of the intestinal phase of digestion, the stimulus for their release, and their effects
- Summarize the function of pancreatic enzymes and the specific functions of the brush border disaccharidases
- Explain the significance of water absorption and motility in the colon
Specific hormones and chemicals to identify
- Gastrin
- Histamine
- Somatostatin
- Cholecystokinin
- Secretin
- GIP
- Intrinsic factor
- Carbonic anhydrase
- Pepsin
- Trypsin
- Disaccharidases
- Lipase
- Amylase
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