NUTR 205 1nd Edition Lecture 7 Outline of Last Lecture I. Dietary guidelines for Americans (DGA) 2010: set of nutrition recommendations that promote health and reduce:II. 2 new overreaching messages:III. Consume less of:IV. Consume more of:V. Other recommendations for building healthy eating patternsOutline of Current Lecture VI. Organs and organ systemsVII. Digestion vs. absorptionVIII. Digestive system secretions: chemical digestionCurrent Lecture- Organs and organ systemso Definitions Cell:- Basic structural and functional unit of living things Tissues: - Group of cells that are similar in structure and function Organ:- A structure tha tis made up of more than one tissue that performs a specialized function Organ system:- A group of organs that work together to perform a specific task- Digestion vs. absorptiono What is the definition of digestion? The breaking down of nutrients to be absorbed o What is the difference between mechanical digestion and chemical digestion? Chemicals will help break down foods Mechanical is the physical breaking down of food (ex. Chewing)o What is the definition of absorption? The process of nutrients being brought into the bodyo Which comes first?These 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. Digestionabsorption- Digestive system secretions: chemical digestiono Mucus is secreted from mucosal cells lining the digestive tract Moistens, lubricates and protectso Enzymes speed up reactions For digestion, help break down larger molecules into smaller oneso Hormones: chemicals secreted from cells which travel through the bloodstream to signal cells in another part of the