PHSI3011 12-2 Comparative Physiology and Thermal #2

Question 1 of 33

1

Fill the blank space to complete the text.

What is Tb?
(just imagine the "b" is subscript)

Explanation

Question 2 of 33

1

Fill the blank space to complete the text.

What is Ta?
(just imagine the "a" is subscript)

Explanation

Question 3 of 33

1

"Homeotherm" means:

Select one of the following:

"one body temperature"
Homeoerotically "hot"
Self-heating

Explanation

Question 4 of 33

1

Tb varies with circadian rhythm by up to 1 degree. When is it lowest and highest?
(again, imagine the "b" is subscript)

Select one of the following:

3-6am lowest; 3-6pm highest
3-6am highest; 3-6pm lowest
12-3am lowest; 12-3pm highest
12-3am highest; 12-3pm lowest

Explanation

Question 5 of 33

1

Tb varies with the menstrual cycle, usually increasing ~0.5-1°C during the:
(again, imagine the "b" is subscript)

Select one of the following:

Post-ovulatory phase
Post-menstrual phase
Follicular phase
Post-follicular phase

Explanation

Question 6 of 33

1

Babies are less able to maintain Tb. Why?
(just imagine the "b" is subscript)
(select all that apply)

Select one or more of the following:

Don’t readily shiver or sweat
High surface-mass ratio
They’re dumb

Explanation

Question 7 of 33

1

During a fever (or exercise), the normal Tb is:
(just imagine the "b" is subscript)

Select one of the following:

34-36°C
36-38°C
38-40°C
40-42°C

Explanation

Question 8 of 33

1

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.

Select one of the following:

True
False

Explanation

Question 9 of 33

1

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.

Select one of the following:

True
False

Explanation

Question 10 of 33

4

Select from the dropdown lists to complete the text.

E = G + T*S
E = ( Total internal energy, Energy emitted from a system )
G = ( disposable ("Good") energy, energy Gained by a system )
T = ( absolute Temperature, Thermodynamic energy within a system, Temperature increase )
S = ( entropy, total energy within a System )

Explanation

Question 11 of 33

1

True or false: an Endotherm is an organism that can generate its own heat.

Select one of the following:

True
False

Explanation

Question 12 of 33

1

True or false: Metabolism is defined as all the chemical processes involved in energy production, energy release, and growth.

Select one of the following:

True
False

Explanation

Question 13 of 33

1

Anabolic vs Catabolic:

Select one or more of the following:

Anabolic = FORMATION of substances
Anabolic = BREAKDOWN of substances
Catabolic = FORMATION of substances
Catabolic = BREAKDOWN of substances

Explanation

Question 14 of 33

1

Metabolic Rate (MR) = the rate at which energy is consumed during:
(select all that apply)

Select one or more of the following:

internal work
external work
energy expenditure / unit of time
energy expenditure (independent of a unit of time)

Explanation

Question 15 of 33

1

BMR vs RMR
The difference between BASAL metabolic rate and RESTING metabolic rate is:

Select one of the following:

Both are idling, but Basal is during minimal part of the day
Both are idling, but Resting is during minimal part of the day

Explanation

Question 16 of 33

1

Metabolic Rate (MR) depends on:
(select all that apply)

Select one or more of the following:

Muscle activity (voluntary)
Muscle activity (involuntary)
Certain hormones
A rise in tissue temperature itself

Explanation

Question 17 of 33

1

Hormones that can influence Metabolic Rate (MR) include Thyroxine and Adrenaline. What effect can they have?

Select one of the following:

Adrenaline increases MR; Thyroxine decreases MR.
Adrenaline decreases MR; Thyroxine increases MR.
Both DECREASE MR.
Both INCREASE MR.

Explanation

Question 18 of 33

1

Under resting conditions, the rate of heat production is:

Select one of the following:

~80 kcal/h
~400-600 kcal/h
~80-120 kcal/h
~120-160 kcal/h
~800 kcal/h

Explanation

Question 19 of 33

1

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?

Select one of the following:

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

Explanation

Question 20 of 33

1

The most common method to measure metabolic rate is:

Select one of the following:

Indirect calorimetry
Guesswork?

Explanation

Question 21 of 33

1

Animals including the stripe-faced dunnart (Sminthopsis macroura) are heterothermic. Heterotherms are:

Select one of the following:

Able to maintain homeothermic thermoregulation, but sometimes can enter torpor.
Animals which maintain thermoregulation collectively.

Explanation

Question 22 of 33

1

Torpor vs Hibernation.
What's the difference?

Select one of the following:

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.

Explanation

Question 23 of 33

1

Torpor and hibernation use are found in which groups:
(select all that apply)

Select one or more of the following:

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)
Insectivores (Eulipotypla: European shrews and hedgehogs; Afrotheria: tenrecs and elephant shrews)
Carnivores (badgers and bears)
Rodents (e.g. ground squirrels and hamsters)
Bats

Explanation

Question 24 of 33

1

Are there Aussie birds which hibernate?

Select one of the following:

Yeah
Nah

Explanation

Question 25 of 33

1

"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).

Select one of the following:

True
False

Explanation

Question 26 of 33

3

Click on each orange point and select the correct answer.

Current view of the efferent mechanisms of thermoregulation.
Label the three appropriate areas.

Explanation

Question 27 of 33

1

True or false: Brown Fat / Brown Adipose Tissue (“BAT”) can induce non-shivering thermogenesis in the absence of muscle stimulus.

Select one of the following:

True
False

Explanation

Question 28 of 33

2

Select from the dropdown lists to complete the text.

During cold exposure, ( Sympathetic, Parasympathetic ) ( Norepinephrine (/noradrenaline), Epinephrine (/adrenaline) ) release activates BAT by stimulation of lipolysis and “futile” UCP1-dependent mitochondrial respiration.

Explanation

Question 29 of 33

1

True or false: UCP1 is found in significant levels in the cortex of non-torpor mammals.

Select one of the following:

True
False

Explanation

Question 30 of 33

1

Select from the dropdown lists to complete the text.

UCP1 is:
( Un-, Universal ) ( Coupling, Cold-sensitive, Climate-sensitive ) ( Progenitor, Protein ) 1

Explanation

Question 31 of 33

1

Which of the 4 ways of heat loss is the most physiologically significant (under normal conditions)?

Select one of the following:

Radiation
Conduction
Convection
Evaporation

Explanation

Question 32 of 33

1

Hot flushes usually last how long?

Select one of the following:

1-5 min
5-10 min
10-15 min
15-30 min
30-60 min

	Created by Michael Jardine about 7 years ago

PHSI3011 12-2 Comparative Physiology and Thermal Physiology #2

PHSI3011 12-2 Comparative Physiology and Thermal #2

Question 1 of 33

Fill the blank space to complete the text.

What is Tb? (just imagine the "b" is subscript)

Explanation

Question 2 of 33

Fill the blank space to complete the text.

What is Ta? (just imagine the "a" is subscript)

Explanation

Question 3 of 33

"Homeotherm" means:

Select one of the following:

Explanation

Question 4 of 33

Tb varies with circadian rhythm by up to 1 degree. When is it lowest and highest? (again, imagine the "b" is subscript)

Select one of the following:

Explanation

Question 5 of 33

Tb varies with the menstrual cycle, usually increasing ~0.5-1°C during the: (again, imagine the "b" is subscript)

Select one of the following:

Explanation

Question 6 of 33

Babies are less able to maintain Tb. Why? (just imagine the "b" is subscript) (select all that apply)

Select one or more of the following:

Explanation

Question 7 of 33

During a fever (or exercise), the normal Tb is: (just imagine the "b" is subscript)

Select one of the following:

Explanation

Question 8 of 33

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.

Select one of the following:

Explanation

Question 9 of 33

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.

Select one of the following:

Explanation

Question 10 of 33

Select from the dropdown lists to complete the text.

Explanation

Question 11 of 33

True or false: an Endotherm is an organism that can generate its own heat.

Select one of the following:

Explanation

Question 12 of 33

True or false: Metabolism is defined as all the chemical processes involved in energy production, energy release, and growth.

Select one of the following:

Explanation

Question 13 of 33

Anabolic vs Catabolic:

Select one or more of the following:

Explanation

Question 14 of 33

Metabolic Rate (MR) = the rate at which energy is consumed during: (select all that apply)

Select one or more of the following:

Explanation

Question 15 of 33

BMR vs RMR The difference between BASAL metabolic rate and RESTING metabolic rate is:

Select one of the following:

Explanation

Question 16 of 33

Metabolic Rate (MR) depends on: (select all that apply)

Select one or more of the following:

Explanation

Question 17 of 33

Hormones that can influence Metabolic Rate (MR) include Thyroxine and Adrenaline. What effect can they have?

Select one of the following:

Explanation

Question 18 of 33

Under resting conditions, the rate of heat production is:

Select one of the following:

Explanation

Question 19 of 33

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?

Select one of the following:

Explanation

Question 20 of 33

The most common method to measure metabolic rate is:

Select one of the following:

What is Tb?
(just imagine the "b" is subscript)

What is Ta?
(just imagine the "a" is subscript)

Tb varies with circadian rhythm by up to 1 degree. When is it lowest and highest?
(again, imagine the "b" is subscript)

Tb varies with the menstrual cycle, usually increasing ~0.5-1°C during the:
(again, imagine the "b" is subscript)

Babies are less able to maintain Tb. Why?
(just imagine the "b" is subscript)
(select all that apply)

During a fever (or exercise), the normal Tb is:
(just imagine the "b" is subscript)

Metabolic Rate (MR) = the rate at which energy is consumed during:
(select all that apply)

BMR vs RMR
The difference between BASAL metabolic rate and RESTING metabolic rate is:

Metabolic Rate (MR) depends on:
(select all that apply)

Torpor vs Hibernation.
What's the difference?

Torpor and hibernation use are found in which groups:
(select all that apply)

"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).

Current view of the efferent mechanisms of thermoregulation.
Label the three appropriate areas.

UCP1 is:
( Un-, Universal ) ( Coupling, Cold-sensitive, Climate-sensitive ) ( Progenitor, Protein ) 1