All notes Flashcards
Median daily energy intake of energy for males in NZ (80kg)
10,380 kJ
Median daily energy intake for females in NZ (80kg)
7448 kJ
What are the 3 components to energy expenditure?
- BMR (basal metabolic rate) 50-60% 2. TEF (thermic effect of food) 10% 3. Physical Activity 20-40%
What are the 3 main types of nutrient?
Macronutrients
Micronutrients
& Water
What are Macronutrients? (3)
- Carbohydrates 2. Fats/lipids 3. Proteins - needed in greater amounts - build/maintain body tissue - provide energy
What are Micronutrients? (2)
- Vitamins 2. Minerals - needed in smaller amounts - essential for many processes including cellular function
What is the definition of Nutrition?
The science of food and how the body uses it in health and disease.
(Fahey, Insel, & Roth, 2011, p.214)
What is the definition of digestion?
The process of breaking down foods in the gastro-intestinal tract into compounds the body can absorb.
(Fahey, Insel, & Roth, 2011, p.214)
Definition of Kilocalorie?
A measure of energy content in food; 1 kilocalorie represents the amount of heat needed to raise the temperature of 1 liter of water 1 degree Celcius; commonly referred to as calorie.
(Fahey, Insel, & Roth, 2011, p.214)
Also known as KCal
Which of the following is not a whole grain?
- brown rice
- wheat flour
- popcorn
- Wheat flour
Unless labeled “whole wheat,” wheat flour is processed to remove the bran and germ and is not a whole grain.
What are the six classes of essential nutrients?
- Proteins
- Carbohydrates
- Fats/Lipids
- Vitamins
- Minerals
- Water
(Fahey, Insel, & Roth, 2011, p.215)
A diet that provides enough essential nutrients is vital because they provide e_____, help b____ & m____ body tissues, and help r_____ body functions
- Energy
- Build
- Maintain
- Regulate
Major source of nutrient found in meat, fish, poultry, eggs, milk products, legumes, nuts
(Fahey, Insel, & Roth, 2011, p.215)
Proteins
Forms important parts of muscles, bone, blood, enzymes, some hormones, and cell membranes; repair tissue; regulate water and acid-base balance; help in growth; supply energy
(Fahey, Insel, & Roth, 2011, p.215)
Protein
Major source of nutrient found in grains (breads and cereals), fruits, vegetables, milk.
(Fahey, Insel, & Roth, 2011, p.215)
Carbohydrates
Supplies energy to cells in brain, nervous system, and blood; supplies energy to muscles during exercise.
(Fahey, Insel, & Roth, 2011, p.215)
Carbohydrates
Major source of energy found in animal foods, grains, nuts, seeds, fish, vegetables.
(Fahey, Insel, & Roth, 2011, p.215)
Fats
Of the six classes of essential nutrients, three supply energy. Fat, Protein and Carbohydrate.
How many calories are there per gram for each?
Fat = 9 calories per gram
Protein = 4 calories per gram
Carbohydrate = 4 calories per gram
What are the building blocks of protein called?
(Fahey, Insel, & Roth, 2011, p.215)
Amino Acids
An essential nutrient; a compound made of amino acids that contains carbon, hydrogen, oxygen, and nitrogen.
(Fahey, Insel, & Roth, 2011, p.215)
Protein
Most absorbtion of nutrients occurs in the ________
(Fahey, Insel, & Roth, 2011, p.216)
Small Intestine
The _______ reabsorbs excess water; remaining solid wastes are collected in the _______ and excreted through the anus
- Large intestine
- Rectum
Name 3 key roles of lipids/fats
- Energy
- Vitamin absorption
- Insulation
- Protects
What is a triglyceride?
Triglycerides are formed from glycerol with three fatty acid chains attached to it.
Within a triglyceride, differences in fatty acid structure result in different types of fats. Depending on this structure, a fat may be…
(Fahey, Insel, & Roth, 2011, p.217)
- Unsaturated
- Monounsaturated
- Polyunsaturated
- Saturated
Red meats (hamburger, steak, roasts), whole milk, cheese, hotdogs, and lunch meats are examples of ________ fat
(Fahey, Insel, & Roth, 2011, p.217)
The leading source of Saturated fat in our diet
Food fats containing large amounts of monounsaturated and polyunsaturated fatty acids usually come from _____ sources and are ______ at room temperature.
- Plant
- Liquid
Olive, canola, safflower, and peanut oils are examples of _______ fatty acids.
(Fahey, Insel, & Roth, 2011, p.217)
Monounsaturated
Corn, soybean, and cottonseed oils contain mostly ________ fatty acids.
(Fahey, Insel, & Roth, 2011, p.217)
Polyunsaturated
A process by which hydrogens are added to unsaturated fats, increasing the dgree of saturation and turning liquid oils into solid fats.
(Fahey, Insel, & Roth, 2011, p.217)
Hydrogenation
A type of unsaturated fatty acid produced during the process of hydrogenation; trans fats have an atypical shape that affects their chemical activity.
Trans fatty acid (trans fat)
A waxy substance found in the blood and cells and needed for synthesis of cell membranes, vitamin D, and hormones.
(Fahey, Insel, & Roth, 2011, p.217)
Cholesterol
What does LDL stand for?
(Fahey, Insel, & Roth, 2011, p.217)
Low Density Lipoprotein
Blood fat that transports cholesterol to organs and tissues; excess amounts result in the accumulation of fatty deposits on artery walls
What does HDL stand for?
(Fahey, Insel, & Roth, 2011, p.217)
High Density Lipoprotein
Blood fat that ehlps transport cholesterol out of the arteries, thereby protecting against heart disease
Saturated and trans fatty acids ____ blood levels of LDL, or ‘bad cholesterol, thereby increasing a person’s risk of heart disease.
(Fahey, Insel, & Roth, 2011, p.217)
Raise
Unsaturated fatty acids ____ blood levels of LDL, or ‘bad cholesterol’, thereby reducing a person’s risk of heart disease.
(Fahey, Insel, & Roth, 2011, p.217)
Lower
Monounsaturated fatty acids, such as those found in olive and canola oils, may _____ levels of HDL, or ‘good cholesterol’, providing greater benefits for heart health.
(Fahey, Insel, & Roth, 2011, p.217)
Increase
For heart health, it’s important to limit your consumption of both _______ and _______ fats
(Fahey, Insel, & Roth, 2011, p.218)
- saturated
- trans