Ch 5 - Textbook Flashcards
6 Essential Nutrients
proteins, fats, carbs, vitamins, minerals, and water
Essential Nutrients
Substances the body
must get from foods
because it cannot
manufacture them
at all or fast enough
to meet its needs;
Macronutrients
Essential nutrients needed in large amounts; include protein, fat, and carbohydrate
Micronutrients
Essential nutrients needed in minute amounts; include vitamins and minerals
Digestion
Process of breaking down foods in gastrointestinal tract for absorption
Calories
Measure of energy content in food; fat = 9 cal/g, protein = 4 cal/g, carb = 4 cal/g
Kilocalories
Energy unit in food; 1 kcal = heat to raise 1L water by 1°C; commonly referred to as a calorie
Proteins are made up of
amino acids,
Proteins form
muscles and bones
and help make up blood, enzymes, hormones, and cell membranes.
Foods from animal sources provide
complete proteins;
Foods from plant sources provide
incomplete proteins
Gastrointestinal Tract
System for digesting food and absorbing nutrients; includes mouth, esophagus, stomach, intestines
Nutritional Requirements
Components of a healthy diet; include proteins, fats, carbs, vitamins, minerals, and water
Essential Nutrients Sources
Proteins: meat, fish, poultry, eggs, milk, legumes, nuts; Carbs: grains, fruits, vegetables; Fats: animal foods, grains, nuts, seeds
Macronutrients Functions
Proteins: body parts, enzymes, hormones, energy;
Carbs: brain energy, muscle fuel;
Fats: energy, organ support