14. Human Nutrition - part 01 - Human digestive system
14. Human Nutrition - part 01 - Human digestive system Nutrition : Nutrition is the sum of the processes by which an organism consumes and utilises food substances. Nutrition as the intake of food, considered in relation to the body's dietary needs -[WHO] Nutrition includes the processes like- Ingestion Digestion, Absorption Assimilation Egestion. Digestion : Digestion is defined as the process by which the complex, non-diffusible and nonabsorbable food substances are converted into simple, diffusible and assimilable substances. Human Digestive System : Digestive system of man consists of- Alimentary canal Associated digestive glands. Alimentary canal : It is a long tubular structure starting from mouth and ending with anus. It is about 8-10 meters long and consists of following organs : Mouth : Also called as oral or buccal cavity is bounded by fleshy lips. It’s side walls are f...