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Nutrition Exam #3
Ch 14, 15, 16
159
Biology
Undergraduate 1
03/12/2013

Additional Biology Flashcards

 


 

Cards

Term
Weight is stable when energy consumed is equal to energy expended
Definition
Energy balance
Term
1 lb of fat =
Definition
3,500 calories
Term
If we eat 500 calories per day above our maintenance levels, we're on track to gain a
Definition
steady 1 lb of fat each week
Term
Body weight gains or losses are _____ and occur _____
Definition

gradual

over time

Term
Weight _____ when energ consumed is greater than expended
Definition
increases
Term
People who have _____ body fat have consumed more food _____ than they have _____
Definition

excess

energy

expended

Term
_____ carbohydrates, lipids, and protein can all contribute to body _____
Definition

Excess

fat

Term
To reduce body fat they need to expend _____ energy than the food they take _____
Definition

more

in

Term
Weight _____ when energy consumed is less than expended
Definition
decreases
Term
Poeple who have too _____ body fat have _____ too little food energy and have broken down lean tissue in the process
Definition

little

consumed

Term

To _____ body fat they need to _____ more food energy than they _____

 

Definition

gain

consume

expend

Term
Measures howmany calories a food provides
Definition

Bomb calorimeter

As food burns energy is released as heat (direct measurement) and O2 is consumed (indirect measure)

Term
The body is _____ efficient than a bomb calorie meter; therefore the energy values of foods are constant
Definition

less

1g carb = 4 cal

1g lipid = 9 cal

1g protein = 4 cal

1g alcohol = 7 cal

Term
Production of heat, can be measured to determine the amount of energy expended
Definition
Thermogenesis
Term
Total energy a body expends reflects four main categories
Definition

Basal metabolism

Physical activity

Thermic effect of food

Adaptive thermogenesis

Term
Expended energy for life sustaining processes
Definition
Basal metabolic rate (BMR)
Term
Easier measurement to obtain than BMR
Definition
Resting metabolic rate (RMR)
Term
Basal metabolism increases
Definition

Growth - baby growing until 25

Height - the taller the person, the more calories burned

Lean muscle -the more muscle you have, the more energy expended.

Fever - the hotter the body, burn more calories

Growth - baby growing until 25

Height - the taller the person, the more calories burned

Lean muscle -the more muscle you have, the more energy expended. Fever - the hotter the body, the more calories burned

Stress

Environment temp - warm, less burned. Cold burn more energy to stay warm

Smoking & Caffeine - more energy more calories burned

Thyroid Hormones

Term
Basal metabolism decreases
Definition

Fasting - not eaten 2-3 hrs, slows metabolism

Starvation - 24 hrs, slows metabolism

Malnutrition - not adequate nutrients, slow metab

Sleep

Aging - 25 & older - aging, slower metab, the older you 

     get the slower your metab

Thyroid Hormones

Term
The voluntary movement of skeletal muscles
Definition
physical activity
Term
_____ of energy expenditure per day - physical activity
Definition
30 - 50%
Term

Physical activity

Most _____ and changeable

Definition
variable
Term

Physical activity

It can be _____ in weight _____ and weight _____

Definition

significant

loss

gain

Term

Physical activity

_____, _____ and _____ all influence energy expenditure

Definition

Duration

frequency

intensity

Term
Energy expenditure used for digestion, absorption, and transport of nutrients
Definition

Thermic effect of food

10% of energy expenditure per day

Term
Energy expenditure related to environment changes
Definition
Adaptive thermogenesis
Term

Thermic effect of food & adaptive thermogenesis

Both of these are often _____ when _____ energy expenditure because their contributions are low

Definition

ignored

calculating

Term

The amount of energy needed to sustain weight

 

Definition

Estimated Energy Requirement (EER)

****review this page for calculation - not sure we need to memorize calculations*****

 

 

Term

Defining Healthy Body Weight

The criterion of _____, society values change over time

_____ body images

Definition

fashion

perceived

Term
Good health is always better appearance
Definition
The criterion of health
Term

Defining healthy body Weight

Body Fat

_____ ___ - important for the body to function.

Found many _____ around the body, ex. bone marrow and liver

Definition

Essential Fat

organs

Term

Defining healthy body weight

Found in the subcutaneous layr under the skin or as visceral fat around organs

Definition
Adipose fat - Stored fat
Term

Defining healthy body weight

Measures weight in relation to height

 

Definition

Body mass index (BMI)

**quick and easy - not always accurate

Term

Underweight - BMI below _____

Healthy weight - BMI between _____

Overweight - BMI above _____

Obese - BMI above _____

Definition

Under - 18.5

Healthy - 18.5 - 24.9

Over - 25 - 29.9

Obese - 30

Term

Body Fat

_____ need less body fat but just wnough for fuel, insulation, protection, nerve impulses, and support hormone activity

Definition
Athletes
Term
Alaskan fishermen need _____ body fat to prevent excessive heat loss in cold climates
Definition
more
Term
Women starting pregnancy need more body fat to support fetal _____
Definition
growth
Term

Fat distribution

Is excess fat around the trunk of the body

Definition
Cental obesity (abdominal fat)
Term
Abdominal fat around abdominal organs is associated with ______ risks of heart disease, stroke, diabetes, hypertension, and cancer
Definition
increased
Term

Waist circumference

≥ _____ in high risk for women

≥ _____ in high risk for men

Definition

35 women

40 men

Term
Some underweight people can enjoy a healthy active life, but tothers are underweight because of _____, _____ or _____.
Definition

malnutrition

substance abuse

illness

Term

Underweight

Cannot handle medical _____

Unable to preserve _____ tissue

Menstrual irregularities and _____

Pregnancy _____

______ and bone fractures

Leads to _____ disorders

Definition

stresses

lean

infertility

problems

Osteoporosis

eating

Term

Health risks of overweight & obese

As for overweight and obese though there are so many health risks that is have been disignate as a disease of its _____ - _____

Definition

own 

obesity

 

Term

Name health risks of overweight & obesity

 

Definition

Diabetes

Hypertension

Cardiovascular disease

Sleep apnea

Osteoarthritis

Some cancers

Gallbladder disease

Kidney disease

Respiratory problems

Complications in pregnancy and surgery

Term
Name complications of Childhood obesity
Definition

Psychosocial

Pulmonary

Renal

Gastrointestinal

Musculoskeletal

Neurological

Cardiovascular

Endocrine

Hernia/Stress incontinence

Term
Weight management is the key component of _____ _____
Definition
good health
Term
Overweight and obesity are _____ health problems, expecially in the ____, and concerns are continuing to _____.
Definition

widespread

U.S.

increase

Term
In the past two decades, obesity has increased in every _____,  in _____ genders, in ____ ages, and in all _____ levels.
Definition

state

both

all

educational

Term
Overweight and obesity is an _____, condition or disease that attacks many people at the same time in the same region
Definition
epidemic
Term

Fat cell Development:

Number - how many

Size - how big

When energy in exceeds energy out, excess energy is stored in ___ cells called _____ ____.

Definition

fat

adipose fat

Term
Everyone - rapidly in later childhood and early puberty
Definition
fat cell numbers increase
Term
After growth ceases fat cell numbers may continue to increase as energy in exceeds energy out
Definition
Fat cell numbers increase
Term
Obese people have _____ and more _____ fat cells than healthy weight people
Definition

larger

abundant

Term

Fat Cell Development

Fat cells are capable of increasing their ___ by __ fold and their _____ by several _____ fold.

 

Definition

size

20

number

thousand

Term
During growth, fat cells increase in _____
Definition

number

 

Term
When energy intake exceeds expenditure, fat cells increase in _____
Definition
size by 20 fold
Term
When fat cells have enlarged and energy intake continues to exceed energy expenditure, fat cells increase in _____ again.
Definition
number
Term
With fat loss, the size of the fat cells shrinks but not the _____
Definition
number
Term
People with extra fat cells tend to ____ lost weight _____, because there numerous fat cells readily become _____.
Definition

regain

rapidly

filled

Term
Excess energy stored as fat fills the body's natural _____ tissue first
Definition
adipose
Term
When too much adipose tissue has accumulated the body deposits _____ into organs such as the _____ or _____, which leads to related disease of those tissues
Definition

excess

heart

liver

Term
_____ initiates eating through the sight, smell, thought, and/or taste of food - sensory organs
Definition
Appetite
Term
Many signals from both the _____ and _____ initiate or delay eating
Definition

environment

genetics

Term
_____ is the feeling that motiates us to eat and is controlled by the _____
Definition

Hunger

hypothalamus

Term

Hunger can be influenced by:

Presence or absence of _____ in the bloodstream

Size and compostion of preceding _____

Eating _____

Climate - heat ____ food intake, cold ____ food intake

Exercise

Hormones

Physical or ____ illnesses

Definition

nutrients

meal

reduces  increases

mental

Term
Hunger determines ___ to eat, ____ to eat, and how ___ to eat
Definition

what 

when

much

Term
Message central
Definition
hypothalamus
Term
Eating is controlled by pshychological, social, _____, physiological factors
Definition
metabolic
Term
The hypothalamus in the brain _____ messages about energy intake, _____, and _____.
Definition

integrates

expenditure

storage

Term
A chemical in the brain called _______ initiates eating, _____ energy expenditure, increases ___ storage, and causes carbohydrate _____, factors that all lead to weight gain.
Definition

Neuropeptide Y

decreases

fat

cravings

 

Term
What percent of population are overweight/obese due to genetics or hormones
Definition
1 - 2% of population
Term
What percent of population are overweight/obese due to environment, overeating and not exercising
Definition
98-99% of population
Term
Energy in
Definition
Satiation
Term
The stomach handles _____ batches food, about _____ hours after a meal most of the food has left the stomach.
Definition

periodic

four

Term
As food enters the small intestion a hormone called ______ becomes active which causes satiation
Definition
cholecystokinin
Term
_____ is the feeling of satisfaction and ____ that causes us to stop _____
Definition

Satiation

fullness

eating

Term
_____Suppresses hunger and reminds us not to eat again until the body ____ food after a ____ of time
Definition

Satiety

needs

period

Term
People can _____ satiation and satiety when presented with _____ situations or _____ foods
Definition

override

stressful

favorite

Term
Bored, anxious, or stress eating is eating in response to _____
Definition
arousal
Term
_____eating to relieve chronic _____ can lead to overeating and weight gain
Definition

Repeatedly

stress

Term
Cognitive influences such as perceptions, memories, intellect, and ____ interactions lead to overriding satiety.
Definition
social
Term
Researchers are just beginning to understand eating _____, brain activity, and "comfor foods" contributing to overriding satiety.
Definition
hormones
Term

Sustaining

Satiation and satiety depend on a foods _____ content

Definition
nutrient
Term

High Satiation

_____ most satiating

_____ carbohydrates

_____ foods

     Ex. eating salad before a meal helps a person eat less

Definition

Protein

Complex

High fiber

Term

Low Satiation

_________ they stimulate people to eat more

Definition
High-fat foods
Term

Sustaining

Fat (lipids) only provide satiation and satiety once it enter the _____ _____.

Definition
small intestine
Term
Eating high-fat foods while trying to limit calories requires _____ portion sizes, which will often leave a person feel _____.
Definition

small

unsatisfied

Term

Fat cell metabolism

_____ promotes fat storage and obese people have more LPL activity in their adipose tissue than lean people

Definition
Lipoprotein lipase (LPL)
Term
The activity of LPL is influenced by _____
Definition
gender
Term
Women have more LPL in ____, _____ and _____ (lower body fat)
Definition

breast

hips

thighs

Term
Men have more LPL in _____ (central body fat)
Definition
abdomen
Term
The breakdown of adipose fat is _____ in women than in men: therefore, women have a more _____ time losing fat.
Definition

lower

difficult

Term
As weight loss occurs more _____ is made by the body, so weight gan right after weight lose is extremely _____ because there is more LPL telling the body to store _____
Definition

LPL

easty

fat

Term

Set-Point Theory

The body's hypothalamus and other important centers help to maintain the body's _____

Definition
homeostasis
Term
Any weightloss or gain triggers the body to ____ original weight, known as the ___ ___ ____.
Definition

restore

Set-Point Theory

Term
This explains why is is difficult for an underweight person to _____ weight gains and for an overweight person to _____ weight losses
Definition

maintain

maintain

Term

Causes of obesity

Obesity may be as simple as food intake _____ metabolic rate, factors, such as _____ and _____, are within our _____

Definition

exceeding

overeating

inactivity

control

Term

Causes of obesity

Other factors, such as _____ , ____, and ____ may require professional intervention

Definition

genetics

hormones

emotions

Term
You cannot change the genome you inherit, but can change _____ and ______
Definition

overeating

inactivity

Term

Genetics of obesity

Researchers have identified the obesity gene (ob) which makes _____

Definition
leptin
Term
A _____ amount of leptin increases energy expenditure and decreases apprtite which helps maintain a healthy weight.
Definition
normal
Term
Leptin may be _____ in obese individuals which causes weight gain
Definition
deficient
Term

Leptin decrease, ____ calories burned and _____ appetite

 

Definition

decreases

increases

Term

Genetics of obesity

_____ is produced by stomach cells, promotes (healthy) appetite, efficient (needs) energy stoarge, and triggers the healthy desire to eat; it's key role is to _____ a stable body weight

Definition

Ghrelin

maintain

Term
_____ people have higher _____ levels than obese people
Definition

Lean

ghrelin

Term
A _____ amount of ghrelin in the body decreases energy expenditure and increases appetite.
Definition
decreased
Term
Name two types of adipose (nonessential) body fat
Definition

White adipose tissue

Brown adipose tissue

Term
_____ adipose tissue stores fat for other cells to use
Definition
White
Term
_____ adipose tissue releases stored energy as heat (burns more calories if body temp warmer)
Definition
Brown
Term
Weight gains or losses may depend on whether the body stores energy in _____ or _____ adipose tissue
Definition

White

Brown

Term
With obesity rates rising and the gene pool remaining constant our environment must play akey role in _____
Definition
obesity
Term
The environment includes all of the daily _____ and choices that push us toward _____ or _____
Definition

circumstances

fatness

thiness

Term

Overeating

____ and ____ eating influences current body weight

Definition

present 

past

Term
Our environment exposes us to _____ high calorie, _____ available, _____, heavily advertised, and reasonably ____ foods
Definition

abundant 

readily

inexpensive

tasty

Term
_____ availability of conveient food, large portions, and energy-dense foods (high calorie)
Definition
Increased
Term

Physical inactivity

_____ _____ replaces physical activities

Definition
Modern technology
Term
Physical activity is important to _____ people to eat enough food to get need _____
Definition

allow

nutrients

Term
Watching T.V., playing video games, and using the computer contribute most to _____
Definition
inactivity
Term

Obesity Health risks

Evaluated using _____, _____ _____ and disease profiles

Definition

BMI

Waist circumference

Term
An estimated ____ of U.S. adults are trying to ____ weight at any given time
Definition

59-60%

lose

Term
Obese or overweight people with risk factors could _____ health by losing weight using _____ and _____ strategies
Definition

improve

diet

exercise

Term
Obese people withmore than two of these risk factors are encouraged to lose weight by health professionals
Definition

Hypertension

Cigarette smoking

High LDL, Low HDL

Impaired glucose tolerance

Family history of heart disease

Men ≥ 45 years, women ≥ 55 years

Term

Perceptions & Prejudices

Social consequences

     Judged on _____ rather than character

     Stereotypes as _____ and lacking self-_____

Definition

appearance

control

*judge on character not appearance*

Term
  • Feelings of rejection, shame & depression are common
  • Ineffective treatments can lead to sense of failure
Definition

Psychological problems of obesity

***Study the cycle chart*****

Term
Name 5 steps of psychological problems caused by obesity
Definition
  1. I am fat and unhappy
  2. I want to be happy
  3. If I lose weight, I will be happy
  4. I try to hard to reach an unrealistic goal
  5. I lose a little weight, but then regain it (and sometimes more)
Term
Name 2 ways to break the psychological obesity cycle
Definition
  1. Be fat and happy
  2. Do not set unrealistic goals - set realistic goals, like 20 pounds, meet that goal and set a new realistic goal
Term

Dangerous interventions

_____ _____ sound good but do not deliver _____ weight loss and may be dangerous when taken to extremes

Definition

Fat diets

permanent

Term
Weight-loss _____ - ex. ephedrine - banned by the FDA due to potential health risks
Definition
products
Term
_____ _____ do not required safety tests and effectiveness tests for these weight loss products
Definition
current laws
Term

Aggressive treatments of obesity

Individuals with _____ ____ ____ and major medical problems may benefit from ____ or _____

Definition

clinically severe obesity

drugs

surgery

Term
Changing and improving eating and exercise habits off the _____ benefit
Definition
greatest
Term
Suppresses appetite and effective when used with a reduced calorie diet and increased physical activity
Definition
Sibutramine
Term
_____ blocks fat digestion and absorption (Alli)
Definition
Orlistat
Term
With all weight loss drugs there are many adverse side effects such as gas, frequent bowel movements, _____ leakage, reduced _____ absorption, headache, constipation, high blood pressure, etc.
Definition

anal

nutrient

Term

Aggressive treatments

Option for those who have tried several weight loss programs and failed, have a BMI ≥ 35, and are having health problems due to their weight

Definition
Surgery
Term
______ surgery has short-term and long-term problems and requires compliance with dietary instruction.
Definition

Gastric

***** study gastric bypass vs banding*****

Term
_____ is popular procedure that is primarily cosmetic but poses risk and does not provide any health benefits
Definition
Liposuction
Term

Weight loss strategies

A life-long plan for good health, which includes _____ adequate diet, _____ expectations, regular physical _____, and _____ lifestyle changes, which is best for achieving _____ weight loss.

Definition

nutrionally

reasonable

activity

permanent

permanent

Term
Weight loss of _____ pounds per week or ____ of body weight in ____ months is safe
Definition

1-2 pounds

10%

six

Term

Weight loss strategies

300-500 calories less per day for BMI _____

500-1000 calores less per day for BMI _____

Diet should be ______ adequate

_____ portions to feel satisfied, not stuffed

Definition

27-35

≥ 35

smaller

Term

Eating Plans

Eat _____ energy density foods, that are high in ____ and water and low in fat

Definition

lower

fiber

Term
Water increases _____ and reduces _____
Definition

fullness

hunger

Term
Complex _____ offer abundant vitamins, minerals, and fiber with little fat
Definition
carbohydrates
Term
Choose fats sensibly and ____ the quantity of fat
Definition
reduce
Term
Watch empty calories from ____ and _____
Definition

sugar

alcohol

Term
An individuals body weight as well as _____ and _____ of activity influence energy ______
Definition

intensity

duration

expenditure

Term

Physical activity:

Increases _____

______ body fat

_____ lean body mass

Helps to curb _____

Reduces _____ and improves ____ _____

And Much More!!!!

Definition

BMR

Decreases

increases

appetite

stress    self-esteem

Term
Choose activites that you _____ and are willing to do more regularly
Definition
enjoy
Term
_____ to moderate intensity for ____ _____ is recommended for weight loss
Definition

Low

long duration

Term
Regular _____ excercise and weightloss will help trouble spots
Definition
aerobic
Term
_____ training can improve muscle tone
Definition
Strength
Term
_____ can help flexibility
Definition
Stretching
Term

Obesity prevention

  • Eat regular meals and limit _____
  • Drink _____ in place of high-calorie beverages
  • Select sensible _____ sizes and limit daily energy intake to energy expended (2000 in = 2000 out)
  • Limit sedentary activities and by _____ active
Definition

snacking

water

portion

physically

Term

Problems of Underweight

  • Incidences of _____ and associated health problems are _____ prevalent than overweight and obesity problems.
  • Causes are _____
  • _____ demands may be great and goods are needed to support growth and physical activities
  • _____ disorders are severe cases
Definition

underweight, less

diverse

Energy

Eating

Term

Weight-gain strategies

  • _____ dense foods can be included but choose fat wisely to avoid the associated cardiac risks
  • _____ meals each day
  • Use _____ portions and expect to feel full
  • Consume _____ snacks between meals
  • Juice and milk are easy ways to _____ calories
  • Exercising to build _____ increases in muscle mass
Definition

Energy

Regular

large

extra

increase

muscles

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