BIOL 152 1st Edition Lecture 19 Outline of Last Lecture - Animal Form and BodyOutline of Current Lecture - Animal NutritionCurrent Lecture- Animal Nutrition The Biology of Digestion- Macromolecules too large and food ≠ building blocks- Enzymatic Hydrolysis Digestive Compartments- Avoid self digestion- Intracellular digestion – spongeso Food vacuoles and lysosomes o Extracellular digestiono Allows ingestion of larger food items- Gastrovascular Cavity- Alimentary CanalMammalian Digestion (Humans)- The mouth and esophaguso Mechanical and chemicalo Salivary amylase breaks down glucose polymers (AKA?)o Smooth muscles move food bolus down esophagus by peristalsiso Cardiac orifice – lower esophageal sphincter- The stomacho Stores food and secretes gastric juice (pH 1-4)o Digestion of proteinso Heliopacter bacteria that causes ulcers o Lining replaced every 3dThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.o Acid chyme o Anatomy of the stomach:Three types of cells in the gastric glands:1. mucus cells 2. chief cells 3. parietal cells - The small intestine- Acid chyme mixes with digestive juices of the pancreas, gall bladder (liver), and intestine- Duodenum- Dual role of pancreas- Exocrine - Endocrine - Role of Liver and gall bladder- Bile - emulsify
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