ANP 1107 Lecture Notes - Lecture 4: Immunoglobulin A, Amylase, Swallowing

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1107
• Professor: Jacqueline Carnegie

Document Summary

1. 3. 1 list, define and provide examples of the 6 digestive processes. 1. 3 describe the region-specific digestive activities of the gi tract and their regulation. Ingestion: taking in good by the mouth. Propulsion: mechanical process of moving food through alimentary canal (starts with the process of swallowing, food is subsequently moved through the digestive tract through peristalsis (an involuntary, unidirectional process involving smooth muscle contractions) Mechanical breakdown (2 processes: physical process: prepares food for subsequent chemical and/or enzymatic digestion which begins with chewing, segmentation: mixing of foods with digestive enzymes. Increases absorption by repeatedly moving different parts of food mass over intestinal mucosa. Chemical digestion: break down of complex food molecules into their basic building blocks for absorption. This process relies on enzymes which are either secreted into the lumen of the alimentary canal: in saliva, you find salivary lipase called lingual lipase. 1. 3. 3 describe the digestive activities associated with the oral cavity and their regulation.