11115763
Descrição
Quiz por Michael Jardine, atualizado more than 1 year ago
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Criado por Michael Jardine
mais de 6 anos atrás
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Questão 1
Questão
What is Tb?
(just imagine the "b" is subscript)
[blank_start]__________[blank_end]
Responda
-
Body Temperature
Questão 2
Questão
What is Ta?
(just imagine the "a" is subscript)
[blank_start]__________[blank_end]
Responda
-
Ambient Temperature
Questão 3
Questão
"Homeotherm" means:
Responda
-
"one body temperature"
-
Homeoerotically "hot"
-
Self-heating
Questão 4
Questão
Tb varies with circadian rhythm by up to 1 degree. When is it lowest and highest?
(again, imagine the "b" is subscript)
Responda
-
3-6am lowest; 3-6pm highest
-
3-6am highest; 3-6pm lowest
-
12-3am lowest; 12-3pm highest
-
12-3am highest; 12-3pm lowest
Questão 5
Questão
Tb varies with the menstrual cycle, usually increasing ~0.5-1°C during the:
(again, imagine the "b" is subscript)
Responda
-
Post-ovulatory phase
-
Post-menstrual phase
-
Follicular phase
-
Post-follicular phase
Questão 6
Questão
Babies are less able to maintain Tb. Why?
(just imagine the "b" is subscript)
(select all that apply)
Responda
-
Don’t readily shiver or sweat
-
High surface-mass ratio
-
They’re dumb
Questão 7
Questão
During a fever (or exercise), the normal Tb is:
(just imagine the "b" is subscript)
Responda
-
34-36°C
-
36-38°C
-
38-40°C
-
40-42°C
Questão 8
Questão
True or false: Old people also have less effective regulation, due in part to their reduced ability to dissipate heat. One reason for this is sweat gland atrophy.
Responda
- True
- False
Questão 9
Questão
True or false: Old people also have less effective regulation, due in part to their reduced ability to generate heat. One reason for this is sweat gland atrophy.
Responda
- True
- False
Questão 10
Questão
E = G + T*S
E = [blank_start]___[blank_end]
G = [blank_start]___[blank_end]
T = [blank_start]___[blank_end]
S = [blank_start]___[blank_end]
Responda
-
Total internal energy
-
Energy emitted from a system
-
disposable ("Good") energy
-
energy Gained by a system
-
absolute Temperature
-
Thermodynamic energy within a system
-
Temperature increase
-
entropy
-
total energy within a System
Questão 11
Questão
True or false: an Endotherm is an organism that can generate its own heat.
Responda
- True
- False
Questão 12
Questão
True or false: Metabolism is defined as all the chemical processes involved in energy production, energy release, and growth.
Responda
- True
- False
Questão 13
Questão
Anabolic vs Catabolic:
Responda
-
Anabolic = FORMATION of substances
-
Anabolic = BREAKDOWN of substances
-
Catabolic = FORMATION of substances
-
Catabolic = BREAKDOWN of substances
Questão 14
Questão
Metabolic Rate (MR) = the rate at which energy is consumed during:
(select all that apply)
Responda
-
internal work
-
external work
-
energy expenditure / unit of time
-
energy expenditure (independent of a unit of time)
Questão 15
Questão
BMR vs RMR
The difference between BASAL metabolic rate and RESTING metabolic rate is:
Responda
-
Both are idling, but Basal is during minimal part of the day
-
Both are idling, but Resting is during minimal part of the day
Questão 16
Questão
Metabolic Rate (MR) depends on:
(select all that apply)
Responda
-
Muscle activity (voluntary)
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Muscle activity (involuntary)
-
Certain hormones
-
A rise in tissue temperature itself
Questão 17
Questão
Hormones that can influence Metabolic Rate (MR) include Thyroxine and Adrenaline. What effect can they have?
Responda
-
Adrenaline increases MR; Thyroxine decreases MR.
-
Adrenaline decreases MR; Thyroxine increases MR.
-
Both DECREASE MR.
-
Both INCREASE MR.
Questão 18
Questão
Under resting conditions, the rate of heat production is:
Responda
-
~80 kcal/h
-
~400-600 kcal/h
-
~80-120 kcal/h
-
~120-160 kcal/h
-
~800 kcal/h
Questão 19
Questão
During a fast walk or jog, Metabolic Rate (MR) is increased to 400-600 kcal/h. In the absence of compensatory heat loss (sweating etc), this extra thermal load would increase Body Temperature by how much?
Responda
-
1°C every 8-10 minutes
-
1°C every minute
-
1°C every hour
-
1°C every 10-20 minutes
-
1°C every 1-2 hours
Questão 20
Questão
The most common method to measure metabolic rate is:
Responda
-
Indirect calorimetry
-
Guesswork?
Questão 21
Questão
Animals including the stripe-faced dunnart (Sminthopsis macroura) are heterothermic. Heterotherms are:
Responda
-
Able to maintain homeothermic thermoregulation, but sometimes can enter torpor.
-
Animals which maintain thermoregulation collectively.
Questão 22
Questão
Torpor vs Hibernation.
What's the difference?
Responda
-
Torpor lasts less than a day; Hibernation lasts longer than a day.
-
Torpor lasts less than a day; Hibernation is a multiday series of torpor bouts.
Questão 23
Questão
Torpor and hibernation use are found in which groups:
(select all that apply)
Responda
-
Artiodactyls (even toed ungulates - e.g. sheep, cattle, pigs, camels, goats)
-
Certiodactyls (marine mammals - e.g. whales, dolphins, porpoises)
-
Perissodactyls (odd-toed ungulates - e.g. horses, rhinoceroses)
-
Monotremes (e.g. echidnas)
-
Marsupials (e.g. pygmy possums)
-
Primates (e.g. Antivaxxers)
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Insectivores (Eulipotypla: European shrews and hedgehogs; Afrotheria: tenrecs and elephant shrews)
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Carnivores (badgers and bears)
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Rodents (e.g. ground squirrels and hamsters)
-
Bats
Questão 24
Questão
Are there Aussie birds which hibernate?
Responda
-
Yeah
-
Nah
Questão 25
Questão
"Super-hibernator":
This is fucking awesome - the arctic ground squirrel hibernates at body temperatures of ~0°C! around the lips is at (or slightly above) zero, while some other parts (including colon) get BELOW 0°C.
Yeah, this is true. So cool, though (geddit?? ...sigh).
Responda
- True
- False
Questão 26
Questão
Current view of the efferent mechanisms of thermoregulation.
Label the three appropriate areas.
Responda
-
Hypothalamic preoptic area
-
Dorsomedial hypothalamus
-
Raphe nuclei in medulla oblongata
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Hypothalamic preoptic area
-
Dorsomedial hypothalamus
-
Raphe nuclei in medulla oblongata
-
Hypothalamic preoptic area
-
Dorsomedial hypothalamus
-
Raphe nuclei in medulla oblongata
Questão 27
Questão
True or false: Brown Fat / Brown Adipose Tissue (“BAT”) can induce non-shivering thermogenesis in the absence of muscle stimulus.
Responda
- True
- False
Questão 28
Questão
During cold exposure, [blank_start]__________[blank_end] [blank_start]__________[blank_end] release activates BAT by stimulation of lipolysis and “futile” UCP1-dependent mitochondrial respiration.
Responda
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Sympathetic
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Parasympathetic
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Norepinephrine (/noradrenaline)
-
Epinephrine (/adrenaline)
Questão 29
Questão
True or false: UCP1 is found in significant levels in the cortex of non-torpor mammals.
Responda
- True
- False
Questão 30
Questão
UCP1 is:
[blank_start]_____[blank_end] [blank_start]_____[blank_end] [blank_start]_____[blank_end] 1
Responda
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Un-
-
Universal
-
Progenitor
-
Protein
-
Coupling
-
Cold-sensitive
-
Climate-sensitive
Questão 31
Questão
Which of the 4 ways of heat loss is the most physiologically significant (under normal conditions)?
Responda
-
Radiation
-
Conduction
-
Convection
-
Evaporation
Questão 32
Questão
Hot flushes usually last how long?
Responda
-
1-5 min
-
5-10 min
-
10-15 min
-
15-30 min
-
30-60 min
Questão 33
Questão
Hot flushes are believed to occur because of:
Responda
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Oestrogen withdrawal
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Progesterone withdrawal
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Changes in the uterine epithelium
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