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17 terms

Understanding Nutrition chapter 8

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Hunger
painful sensation caused by a lack of food, that initiates food seeking behavior
Appetite
the integrated response to the sight, smell, thought, or taste of food that initiates or delays eating
Satiation
In eating behavior, the feeling of fullness and diminished desire to eat that accompanies eating a meal; in general, the sensation of having an appetite or desire fully or excessively satisfied.
Satiety
the feeling of fullness or satisfaction that people experience after meals and inhibits eating until the next meal. determines how much time passes between meals
Eating involves _____ of our senses
All
Fat has a weak effect on our_____
satiety
Protein has a _____ effect on our satiety
high
Hypothalamus
is the control center and helps control meal size
Components of Energy expenditure
basal metabolism, basal metabolic rate, resting metabolic rate, and lean body mass, and physical activity
Basal Metabolic Rate (BMR)
the rate at which the body expends energy for life sustaining activities.
Resting Metabolic Rate (RMR)
the caloric expenditure of the body during resting conditions
Physical activity
voluntary movement of skeletal muscles and support system. it is the most variable, and changable component of energy expenditure. depends of 3 factors, muscle mass, body weight, and activity.
Factors that influence energy expenditure
gender, age, growth, body composition, fever, stress, enviornmental temp, fasting/starvation. malnutrition, hormones, smoking, caffeine, and sleep, greater muscle mass has greatest effect on resting energy expenditure
BMI
Body Mass Index
Abdominal Fat
excess fat around the trunk of the body, increases risk of disease
Ways to measure body fat
skin fold, hydrodensitometry, bioelectrical impedence, air displacement plethysmography, duel energy xray absorbption
health risk with weight
over and underweight, over weight has increase disease, underweight malnutrition