Chapter 6: Basic Nutrition and Digestion Flashcards
Body’s preferred source of immediate energy
Improve digestive health and and cholesterol levels
Carbohydrate
3 monosaccharides found in nature can be utilized by humans:
Glucose
Fructose
Galactose
Fruit sugar
Basic building block of most carbs
_ linked to glucose forms lactose
Fructose
Glucose
Galactose
Two glucose molecules bound together
Maltose
Glucose and fructose =
Sucrose - table sugar
Fructose, glucose and a bit of sucrose dissolved in water =
Honey
Most sweeteners are
Disaccharides
HFCS (corn sweeteners) =
Glucose with smaller amounts of maltose
_ produced from some berries and fruits
Absorbed by body at slower rate.
Sorbitol
Chain of 10 simple sugars
Oligosaccharide
_ are mostly indigestible
Relieve constipation
Improve triglyceride levels
Decrease foul smelling gas
Fructooligosaccharides
Animal carbohydrate found in meat products
Glycogen
Plant carbohydrate found in grains, veggies
Only polysaccharide humans can digest
Starch
Complex carbs :2
Glycogen and starch
_ rates carbs based on blood glucose response
Glycemic index
Fiber contributes _ calories per gram
1.5 to 2.5 calories per gram
Fiber obtained naturally from plant foods
Dietary fiber
Isolated fibers added to food products
Functional fiber
Fiber that:
Increases fullness
Forms gels in water
Helps prevent heart disease and stroke by bindinrg bile and cholesterol
Holds moisture in stools and softens them
High viscosity fiber ( soluble fiber)
Fiber that:
Increases fecal bulk
Laxative effect
Low viscosity fiber (insoluable )
Gums, oats, legumes, barley, apples, carrots, strawberries are examples of _ fiber
High viscosity fiber (soluble)
Whole wheat flour, bran veggies
Low viscosity fibers ( insoluble)
Daily Fiber recommendation for:
Adults
Children
14 g / 1000 calories or 25-35 grams
Eat their age plus 5 grams
Glycogen stored in liver
Glycogen stored in muscle
90 G
150 G
90 grams glycogen = calories
150 grams glycogen = calories
360 calories
600 calories
Why do excess carbs turn to stored fat?
Glycogen contains many water molecules making it large and bulky and unsuitable for long term storage
Converts to fat for long term storage
_ is the key to acid base and fluid balance
Protein
Carbohydrate with an attached nitrogen containing amino component
Protein
Degree tho which an a I o acid can be used by the body
Bioavailability
Complimentary proteins (2)
Grains -legumes (rice/beans)
Legumes - seeds (beans /seeds)
Amino acid that cannot be produced in elderly or infants and some with chronic disease
This is essential for these populations
Cysteine
8 essential amino acids:
Valine Leucine Isoleucine Methionine Phenylalanine Threonine Tryptophan Lysine
_ body breaks down more protein than it can create ( negative nitrogen balance)
_ body produces more protein than it breaks down(positive nitrogen balance)
Catabolism
Anabolism
Protein consumed beyond what the body needs is
Converted into stored FAT
Fats are made up of 3:
Fat are _ in wate
Hydrogen carbon and oxygen
Insoluble
Saturated fat: 3
No double carbon bonds
Solid at room temp
Very stable
Unsaturated fat : 4
Contain one or more double bonds
Liquid at room temp
Unstable
Short shelf life
HDL can be increased by _ because it lowers plaque build up within arteries
3 examples
Monounsaturated fats
Olive oil
Peanut oil
Canola oil
Polyunsaturated fats: 4
Corn oil
Safflower oil
Soybean oils
Cold water fish
EFAs must be obtained _
From the diet
Omega 3s:
Which one is found in plants?
ALA
EPA
DHA
ALA found in plants
Omega 3s do what: 4
Reduce blood clotting
Dilate blood vessels
Reduce inflammation
Reduce cholesterol and triglycerides
ALA intake per day for growth and neural development
1.1 grams
Americans low on omega _ fatty acids
Omega 3
Omega 6 intake per day
Men
Women
Men 17 g
Women 12 g
Making unsaturated fat solid at room temp
Partially hydrogenated oil (trans fat)
Cholesterol makes: 3
Vitamin d
Estrogen
Testosterone
Hypercholesterolemia
High blood levels of cholesterol
_ remove excess cholesterol from the arteries and carry it back to the liver where it is excreted
HDLs
Part of autonomic nervous system responsible for digestion
Parasympathetic nervous system
Salivary enzyme a-amylase breaks down polysaccharides into
Oligosaccharides and disaccharides
Duodenum
Majority of food digestion takes place in the
Majority of food absorption occurs in the :2
Jejunum and ileum
Enzyme that digests lactose
Lactase
Protein loses its three dimensional shape
Denaturation
Hormone that maintains the pH of the stomach
Signals the cells that produce hydrochloric acid when food enters the stomach
Gastric
Enzyme that breaks the peptide bonds btwn amino acids to shorten long protein complexes
Pepsin
Enzyme responsible for breaking down proteins into single amino acids
Trypsin
Protein can provide up to _ % of the goal energy for exercise during catabolism
10%
Release of _ and _ decrease gut movement and slow digestioqn explaining why high fat meals increase feelings of fullness
Gastric inhibitory peptide and secretin
A large lipoprotein particle that transfers fat from food from the small intestine to the liver and adipose tissue
Chylomicron
2 vitamins produced in the the body by normal intestinal flora
1 vitamin produced with sun exposure
Vitamin k
Biotin
Vitamin d
Inactive vitamins, the body contains enzymes to convert them into active vitamins
Provitamins
_ called a quasi-vitamin can be produced in the body but also provides benefits through food
May prevent _ and _disease b/c it plays a role in platelet functions
Choline
Alzheimer’s and fatty liver disease
Fat soluble vitamins: 4
A,D, E, and K
Only 2 water soluble vitamins that can be stored in the body
B6
B12
Essential for carbohydrate function
Assists in carb, amino acid and lipid metabolism. Deficiencies can cause eye problems
Thiamin
Riboflavin
Involved in carbohydrate, protein and fat metabolism. Deficiency can cause pellagra- dermatitis, diarrhea and dementia
Helps release energy from fats and vegetables
Niacin
Pantothenic acid
Helps build body tissue and aids in metabolism of protein, glycogenolysis
Plays a crucial role in productions DNA, red blood cell production, important during pregnancy
B6
Folate
Aids in cell development and function of nervous system. Vegans at risk for deficiency
Helper vitamin. Involved in metabolism of proteins fats and carbs
B12
Biotin
A deficiency in this can cause scurvy
Important for vision, growth and development (beta- carotene)
Vitamin c
Vitamin a
Sunshine vitamin. Small amounts of sunlight induce body into making
Toxicity can be hazardous for people taking anti clotting meds like Coumadin
Vitamin d
Vitamin e
Important for blood clotting. Newborns are at risk for deficiency, people on blood thinners need to be careful
Vitamin k
Deficiency in this nutrient can lead to decreased peak bone mass. Mineralization of bones and teeth *most abundant mineral in the body
2nd most abundant mineral in the body. Mineralization of bones and teeth.
Calcium
Phosphorus
Important for protein production, muscle contract, nerve conduction, healthy teeth. Depletion can cause arrhythmia and heart attack
Maintains acid base balance
Magnesium
3 electrolytes
4 essential roles
Sodium, potassium and chloride
Water balance
Negative and positive balance with ions
Acid base balance
Assuring sodium and chloride stay outside of cell and potassium inside of cell
Dehydration = _ level of electrolytes
Hyponatremia = _ level of electrolytes
High level
Low level
Can be stored in the body for future use as the protein complex ferritin
Essential for normal growth and metabolism. Deficiency can cause goiter. Component of thyroxine, controls metabolism
Iron
Iodine
Assists in wound healing
Protects body from oxidative damage
Zinc
Selenium
Substance in plants improves health but not required for normal functioning
Photochemical
Involved in glucose metabolism. Increases effectiveness of insulin
Chromium
Loss of _% total body water can cause death
Adults can survive for _ days with out water
% of body weight that is water
20%
10 days
50-70%
Encephalopathy ( brain swelling):
What is elevated?
Bloods water to sodium ratio
Excess water leaks into brain
Low bold sodium level
Hyponatremia
Any whole food or fortified, enriched that has a potentially beneficial effect on human health beyond basic nutrition
Functional foods
Level of caffeine below which dependency is not likely to occur
100 mg
To a nerve cell caffeine resembles
Adenosine