Shared Flashcard Set

Details

Nutrition Final
Final
52
Science
Undergraduate 1
05/06/2008

Additional Science Flashcards

 


 

Cards

Term
Water
Definition
the body needs more water per day than any other nutrient
can only survive a few days without water
water makes up to 60% of an adult's body weight
participates in many chemical reactions
Term
Body Fluids and Minerals
Definition
calls cannot directly regulate the passage of water across their membranes
water content of cells is regulated by major minerals that form salts which are dissolved in body fluids
Term
Why Do You Need Water?
Definition
water is a universal solvent
delivers nutrients and removes wates from cells
delivers nutrients and oxygen to cells
waste products away from cells
acts as a lubricant (digestive tract)
cushions sensitive tissues (spinal cord)
regulates core body temperature (sweat cools body, blood routed through capillaries in the skin get rid of excess heat)
Term
Water Balance
Definition
water intake needs to equal water loss otherwise dehydration or water intoxication can occur
Term
How Much Water Do You Need a Day?
Definition
DRI meets 80% of your needs
men- 13 cups
women-9 cups
Term
Water Intoxication
Definition
occurs when plain water floods the body's fluids and disturbs their normal composition
most victims have consumed several gallons of water in a few hours
rare, but immediate action is needed to reverse dangerously diluted blood before death occurs
Term
Alcohol
Definition
the most commonly ingested is ethyl alcohol or ethanol
a sedative and central nervous system depressant
7 cal/gram
Term
Health Benefits of Alcohol
Definition
people who consume one or two drinks daily have lower mortality rates than nondrinkers
can increase HDL cholesterol
it also inhibits blood from forming clots, reducing risk of death from heart attack
red wine and dark beer contain antioxidants
but only benefit is women 55+ and men 45+
Term
Effects of Alcohol
Definition
alcohol is distributed quickly and thoroughly in the body
it can affect the central nervous system even in small concentrations
even small amounts in the blood can slow reaction
Term
Alcohol Metabolism
Definition
Alcohol Dehydrogenase (ADH) in stomach
women have less than men
can only metabolize one drink per 1.5 hours
Term
Gender and Alcohol
Definition
men and women absorb and metabolize alcohol differently
women: smaller amounts of body water and lower activity of ADH means a larger proportion of ingested alcohol to reach the blood

an alcoholic drink consumed after a meal is absorbed 3x more slowly than on an empty stomach
Term
Factors that Influence Alcohol
Definition
Gender
Body Type
Food
Amount Consumed
Term
Stand Servings of Alcohol
Definition
12 ounces of beer
5 ounces of wine
1.5 ounces of 80 proof distilled spirits
12 ounces wine/malt or spirit-based cooler
Term
The Brain and Alcohol
Definition
Forebrain- effects walking and nausea
Cerebellum- inhibition
Brain Stem- Heart and breathing (worst)
Term
Harmful Effects of Alcohol
Definition
hangover- dehydration, dont eat so you feel dizzy and nauseous, blood sugar drops, alcohol interferes with glucagon so blood sugar continues to drop
interferes with sex hormones
drinks have a lot of calories
Term
People who should not drink
Definition
those who cannot restrict their alcohol intake
women of childbearing age who may become pregnant
pregnant and lactating women
children and adolescents
individuals taking medications that can interact with alcohol
those with specific medical conditions
individuals engaging in activities that require attention, skill, or coordination
Term
Fetal Alcohol Syndrome: Criteria
Definition
maternal drinking during pregnancy
characteristic pattern of facial abnormalities
growth retardation
brain damage often manifested by intellectual difficulties or behavioral problems
Term
Fetal Alcohol Syndrome: Traits
Definition
low nasal bridge, short eyelid opening, small head circumference, undeveloped groove in center of upper lip
irreversible abnormalities of the brain and other organs accompany these facial traits
Term
Alcohol's Affects of Body Functions
Definition
increased fat synthesis by the liver: fatty liver, alcoholic hepatitis, cirrhosis
stomach cells oversecrete acids
intestinal cells fail to absorbs B viamins
liver cells loose efficiency in activating vitamin D and alter production and excretion of bile
liver cells suffer a reduced capacity to process and use vitamin A
kidney excretion of minerals increases
Term
Binge Drinking
Definition
Males- 5+drinks
Femals- 4+ drinks

can lead to alcohol poisoning
Term
Signs of Alcoholism
Definition
craves alcohol
develops a higher tolerance for it
can't control or limit his intake
developed a dependency on alcohol because withdrawal symptoms occur when drinking stops
Term
Body Mass Index (BMI)
Definition
an index of your weight in relationship to your height
overweight: BMI 25-29.9
underweight: BMI <18.5
does not account for a muscular person with a low percentage of body fat
Term
Underweight
Definition
has minimal body fat stores
will be at a disadvantage where energy reserves might be needed- prolonged period of physiological stress or injury
menstrual irregularity, infertility, and osteoporosis
Term
Overweight
Definition
high blood pressure
stroke
high blood fat and cholesterol
gallbladder disease
heart disease
type II diabetes
osteoarthritis
sleep apnea and respiratory problems
some cancers
Term
How Many Calories Do You Need Each Day?
Definition
energy output (energy needed to live)
- basal metabolism (BMR)- sum total of energy expended on all of the involuntary activities needed to sustain life
-physical activities
- thermic effect of food: energy you need to digest food
Term
Increase BMR
Definition
muscle mass, gender, growth, stress, thyroid
Term
Decrease BMR
Definition
age
reduced calorie intake
Term
Effects of Energy Imbalance
Definition
Too few calories can cause underweight- liver glycogen depleted, ketone bodies generated from incomplete breakdown of fat, amino acids from body protein breakdown can be used to make glucose
fasting- degrades the body's lean tissue, the body also adapts to fasting by slowing its metabolic rate
Too many calories cause overweight- limited capacity to store glucose as glycogen, can't store extra protein, unlimited capacity to store fat
Term
Healthy Weight Loss Goals
Definition
lose 10% Body Weight Over 6 month period
Term
Behaviors that affect body weight
Definition
environment of cheap and easily obtainable energy dense goods stimulate appetite
we work more and cook less: about 1/3 calories come from ready to eat foods
we eat more: increased availability of food services, larger portions
Term
Physical Activity
Definition
will burn calories, alter body composition in a positive way, alter metabolism, and offer psychological benefits
Term
Disordered Eating
Definition
abnormal and potentially harmful eating behaviors that do not meet specific criteria for eating disorders
Term
Eating Disorders
Definition
psychological illnesses that involve specific abnormal eating behaviors and other facts
about 11 million in US
most are adolescent or young adult white, middle/upper class females, but increasing in males, minorities, and other groups
Term
Anorexia Nervosa
Definition
self-starvation and excessive weight loss
intense fear of being fat
distorted body image: see themselves as fat when underweight
health consequences: electrolyte imbalance can be fatal
drops in body temperature, decrease in heart rate and blood pressure, osteoporosis
Term
Bulimia Nervosa
Definition
purging can include self-induced vomiting, excessive exercising, strict dieting or fasting, abuse of diet pills, laxatives, and diuretics
vomiting can cause tears in esophagus and other problems
potentially fatal electrolyte imbalance can also result from bulimia
Term
How to Treat Eating Disorders
Definition
multidiscipline teams is most effective approach
psychological, medical, and nutrition
Term
Neural Tube Defects
Definition
include any of a number of birth defects in the orderly formation of the neural tube during early gestation
arise in the first few days or weeks of pregnancy
folate needs to be consumed prior to pregnancy-400 micrograms
Term
Methylmercury
Definition
women who may become pregnant, pregnant women, nursing mothers, and young children
eat up to 12 ounces week of a variety of dish and shellfish that are lower in mercury (cod, shrimp, salmon)
do not eat shark, swordfish
Term
Malnutrition and Pregnancy
Definition
mothers are more lucky to have infants who become ill, have birth defects and suffer retarded mental or physical development
Term
Iron and Pregnancy
Definition
the recommended intake for iron during pregnancy is 27 miligrams per day
Term
Vitamin A
Definition
can be toxic and increase risk of birth defects
Term
Listeriosis
Definition
a food born illness that can cause miscarriage, stillbirth, or severe brain or other infections to fetus
Term
1st Trimester
Definition
no need for increase calories but increase need for folate, zinc, and iron
nutrient dense diet
cravings
morning sickness
Term
2nd Trimester
Definition
340 calories extra, carbs, essential fatty acids, proteins
Term
Gestational Diabetes
Definition
the appearance of abnormal glucose tolerance during pregnancy, with a return to normal following pregnancy
Term
3rd Trimester
Definition
need 450 calories
constipation
heart burn
Term
Breast-feeding Benefits for Mother
Definition
physical: helps with recovery, reduces risk of breast and ovarian cancers and the risk of hip fractures and type two diabetes
financial: much cheeper then formula
convenience: always available
women with HIV/AIDS, tuberculosis, receiving chemotherapy, and using illegal drugs should not breastfeed
Term
Breastfeeding Benefits for Baby
Definition
bonding
health benefits: colostrum(rich in protective factors), bifidus factor (helps growth of good bacteria in digestive system), and lactoferrin (helps immune system)
Term
Formula
Definition
benefits include that it includes the almost same nutrient composition of breast milk, can see if baby is getting enough, and other family members can feed
Term
Food for Babies
Definition
0-3: breast milk
3-6: pureed vegetables, iron-fortified cereal
6-8: pureed meats or beans
8-12: mashed or chopped food

solid foods may be added to diet when the baby is between 4 and 6 months old
Term
Issues With Children's Diets Today
Definition
childhood obesity has tripled in US
too few fruits and vegs
too much fat and added sugars
large food portions
reliance on fast foods
not enough activity
Term
Teen Nutrition
Definition
issues include:
overweight and obesity
undernutrion
iron-deficiney
low calcium intake
dental caries
Supporting users have an ad free experience!