NUSC 1165 Study Guide - Midterm Guide: Esophagus, Pharynx, Trachea
16 Oct 2018
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Document Summary
Nutrient: a substance that an organism needs to sustain life. Nutrition: sciences that studies the relationship between a living organism and food. Malnutrition: either too much or too little or nutrients. Differentiate between essential and non-essential nutrients (examples) Non-essential: may support health, but not required (fiber, alchohol) Classes of nutrients difference between macro and micronutrients; number of kcal provided per gram by macronutrients. Macronutrients: provide energy (except for water) and are needed in large amounts daily. Micronutrients: provide no energy, but are essential for proper body functions, needed in small amounts. Scientific method: unbiased approach to study relationship betwn living organisms and food. Observation -> hypothesis -> experiment -> theory. Observational: no active intervention, suggest associations, cannot determine cause and effect relationships. Double-blind: gold standard researcher and subject do not know who has what, placebo and actual are similar in look, smell, and taste. Fda: regulate content and labeling of products, ensure safety.
