NUR170 Exam 3 Questions and Answers
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What is thermoregulation?
body temperature
body process that balances production and heat loss
heat produced - heat loss = body temperature
What is the goal of thermoregulation?
to maintain the body's temperature within acceptable/safe range
the body wants to maintain homeostasis
body knows where it wants to live (temp. wise), doing what it can
to get back to homeostasis
to prevent death
too cold or too hot, death can occur
What is homeostasis?
Maintaining a stable internal environment
What is cellular respiration?
glucose and oxygen make energy, with the by product of heat
anything that we do to speed up this process, create more heat
expend more energy, expend heat
In regards to body temperature, what happens to a body after
a person dies?
body temp drops because no energy is being created meaning no
heat
What factors affect heat production?
,basal metabolic rate, muscle activity, thyroxine output,
sympathetic stimulation/stress response, fever
What is basal metabolic rate?
the rate of energy utilization the body uses to maintain essential
activities
decreases with age: metabolism is slowing down
making older people colder
What does muscle activity (exercise) do to body
temperature?
when you exercise, you get hot
exercise increases the need for energy (ATP), thus produces
byproduct of more heat
shivering when cold, produces energy, producing more heat
What does thyroxine output do to body temperature?
increased thyroxine levels release epinephrine, when it is
released, it increases vasoconstriction, we accelerated the
cellular metabolic rate, increasing the heat production
What is chemical thermogenesis?
the stimulation of heat production in the body through increased
cellular metabolism
What is sympathetic stimulation/stress response do to body
temperature?
fight or flight response
walking into exams, anxious or see a question that sends you into
fight or flight, you get a rush of heat through body
release of epinephrine and noro-epinephrine, which will increase
metabolism, creating more heat
What does a fever do to body temperature?
,an immune response that raises the body temperature
not will it raise body temperature, but increase our metabolic
needs/rate, increasing energy and thus our by product, heat
Wha are different types of heat loss from the body?
radiation, conduction, convection, vaporization
What is radiation?
the transfer of heat from the surface of an object without touching
getting hot from the sun's rays (not touching)
dog doesn't touch, waking up sweating because the dog radiates
so much heat
What is conduction?
transfer of heat from one molecule to a molecule of lower
temperature, needing to be touching
tepid (cool) bath
-taking someone with a fever, putting them in a cool bath
ice packs
cool washcloths
heating pad
What is convection?
dispersion of heat by the fluid of air or water across the skin
convection oven has a fan in the back, heat is being dispersed
through the fan
heat loss: fan
spritzing water
, when dog is radiate heat, turn on fan to bring my body
temperature down
fluid motion of air comes down and blows it away
amusement park with mist showers
What is vaporization?
continuous evaporation of moisture form repository tract, mucosa
of mouth or skin (swat glands)
perspiration when we work out
millions of sweat glands that produce perspiration (sweating), and
when the body needs to lose heat (cool) the sweat glands will
sweat and then it will evaporate
when you sweat, body is trying to drop body temperature
How is the heat of the body measured?
celcius and fahrenheit
F = (C x 9/5) + 32
C= 5/9 (F - 32)
What controls body temeprature?
the hypothalamus, which acts as a thermostat, decides what your
set point is
What is normal body temperature?
average is 98.6 F = 37 C
What does the hypothalamus to in regards to body
temperature?
will elicit a response from the body (produce or lose heat)
goal is to keep body within normal range
What does the body do when its cold?
Latest Top Rated 2025
What is thermoregulation?
body temperature
body process that balances production and heat loss
heat produced - heat loss = body temperature
What is the goal of thermoregulation?
to maintain the body's temperature within acceptable/safe range
the body wants to maintain homeostasis
body knows where it wants to live (temp. wise), doing what it can
to get back to homeostasis
to prevent death
too cold or too hot, death can occur
What is homeostasis?
Maintaining a stable internal environment
What is cellular respiration?
glucose and oxygen make energy, with the by product of heat
anything that we do to speed up this process, create more heat
expend more energy, expend heat
In regards to body temperature, what happens to a body after
a person dies?
body temp drops because no energy is being created meaning no
heat
What factors affect heat production?
,basal metabolic rate, muscle activity, thyroxine output,
sympathetic stimulation/stress response, fever
What is basal metabolic rate?
the rate of energy utilization the body uses to maintain essential
activities
decreases with age: metabolism is slowing down
making older people colder
What does muscle activity (exercise) do to body
temperature?
when you exercise, you get hot
exercise increases the need for energy (ATP), thus produces
byproduct of more heat
shivering when cold, produces energy, producing more heat
What does thyroxine output do to body temperature?
increased thyroxine levels release epinephrine, when it is
released, it increases vasoconstriction, we accelerated the
cellular metabolic rate, increasing the heat production
What is chemical thermogenesis?
the stimulation of heat production in the body through increased
cellular metabolism
What is sympathetic stimulation/stress response do to body
temperature?
fight or flight response
walking into exams, anxious or see a question that sends you into
fight or flight, you get a rush of heat through body
release of epinephrine and noro-epinephrine, which will increase
metabolism, creating more heat
What does a fever do to body temperature?
,an immune response that raises the body temperature
not will it raise body temperature, but increase our metabolic
needs/rate, increasing energy and thus our by product, heat
Wha are different types of heat loss from the body?
radiation, conduction, convection, vaporization
What is radiation?
the transfer of heat from the surface of an object without touching
getting hot from the sun's rays (not touching)
dog doesn't touch, waking up sweating because the dog radiates
so much heat
What is conduction?
transfer of heat from one molecule to a molecule of lower
temperature, needing to be touching
tepid (cool) bath
-taking someone with a fever, putting them in a cool bath
ice packs
cool washcloths
heating pad
What is convection?
dispersion of heat by the fluid of air or water across the skin
convection oven has a fan in the back, heat is being dispersed
through the fan
heat loss: fan
spritzing water
, when dog is radiate heat, turn on fan to bring my body
temperature down
fluid motion of air comes down and blows it away
amusement park with mist showers
What is vaporization?
continuous evaporation of moisture form repository tract, mucosa
of mouth or skin (swat glands)
perspiration when we work out
millions of sweat glands that produce perspiration (sweating), and
when the body needs to lose heat (cool) the sweat glands will
sweat and then it will evaporate
when you sweat, body is trying to drop body temperature
How is the heat of the body measured?
celcius and fahrenheit
F = (C x 9/5) + 32
C= 5/9 (F - 32)
What controls body temeprature?
the hypothalamus, which acts as a thermostat, decides what your
set point is
What is normal body temperature?
average is 98.6 F = 37 C
What does the hypothalamus to in regards to body
temperature?
will elicit a response from the body (produce or lose heat)
goal is to keep body within normal range
What does the body do when its cold?
