Biology 2601A/B Lecture Notes - Lecture 15: Batch Reactor, Disaccharide, Membrane Transport Protein
18 Nov 2017
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Food: inefficiently packaged nutrient molecules: micronutrients: vitamins, minerals absorbed as is, they are not broken down further, required due to not being able to synthesize them by ourselves (they are essential nutrients. Different diets have different ease of digestion: different requirements of digestion depending on diets. Anatomy of a typical plug-flow (continuous flow) gut: Two arthropods: dividing the gut into a foregut (stomach for digestion), midgut (nutrients absorption), and hindgut (rectum as well as waste storage, as well as water and salt balance) In arthropods, the foregut and the hindgut are lined with the cuticle: those parts are less permeable and for those animals those parts are on the outside of their bodies. In the foregut mostly the physical digestion happens here as well as chemical digestion. Shown is a cross section of the gut: Intraluminal this is the inside of the lumen of the gut (which is the outside of the animal)
