UNIB10009 Lecture Notes - Lecture 5: Flax, Low-Density Lipoprotein, Omega-3 Fatty Acid
17 Aug 2018
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Document Summary
Definition of a nutrient - a chemical substance that provides nourishment and affects the nutritive and metabolic processes of the body. Nutrients are essential for growth, reproduction, and maintenance of health. ~ perception available finances, cultural norms & cuisines, remoteness. ~ vital for life of all organisms and cells. ~ water is the main component of the human body. ~ composition in the body (average) 90% blood, 70% muscle. ~ necessary for biochemical and physiological processes within the body solvent, medium for processes/reactions to occur, anatomical structures, intracellular (within the cell), extracellular (surrounds cells) ~ osmosis water moves through the cell membrane in the direction of higher concentration of dissolved solutes. These are required in amounts of greater than 1gram/day. ~ fat is the most energy dense macronutrient. ~ brain relies almost extensively on carbohydrates to function. ~ other tissues, nerves and muscles use carbohydrates for a significant proportion of energy.
