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11 Cards in this Set
- Front
- Back
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First Law of Thermodynamics
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energy can neither created or destroyed.
energy is simply converted from one form to another. |
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Hypothermia
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lowering of body temp. below 35 degrees C (95 degrees F)
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all five factor operate through feedback mechanisms...which include?
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-thermoreceptors
-chemoreceptors(glucose & insulin) -peptide(N.P Y & galanin) -neural signals |
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Hypothermia is induced by?
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-overwhelming cold stress
-metabolic diseases -hypoglycemia -hypothyroidism -adrenal insufficiency -drugs -alcohol -anitdepressants -sedatives -tranquilizers -burns -malnutrition |
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Five factors in sensing and regulating hunger:
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1. neural signals from GI tract
2. blood borne signals related to energy stores 3. body temperature 4. psychological factors 5. leptin (thought to be the overall satiety signal) |
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Metabolic Rate means?
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rate of energy output/hour
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Most of the energy in foos is converted to heat by? (three ways)
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-bond formation and breaking
-muscle contraction -friction of blood on vessels |
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Our bodies need to balance energy input and output,
energy intake equals? |
energy output(heat, work,storage)
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Basal metabolic rate is measured while?
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-resting
-relaxed -20-25 degrees C (room temp.) -postabsorptive state (fasting for 12hrs.) |
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total metabolic rate includes?
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all activities
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Body weight increases?
Body weight decreases? |
-when intake exceeds output
-when output exceeds intake |
