Question 1

Which statement about glial cells is true?

Accepted Answer

A)  They provide immune functions for the central nervous system. 
B)  They are insulated by neuronal processes. 
C)  They are found primarily in skeletal muscle tissue. 
D)  They secrete enzymes as part of an epithelium. 
E)  They coordinate smooth muscle in the gut.

Question 2

Which type of tissue has a high mineral content?

Accepted Answer

A)  Cartilage 
B)  Muscle 
C)  Bone 
D)  Nervous 
E)  Adipose

Question 3

Animals that can modulate their body temperatures by generating metabolic heat are called _______.

Accepted Answer

The answer of Animals that can modulate their body temperatures...

Question 4

Refer to the graph showing how different types of organisms respond to changes in environmental temperature.  The curve labeled _______ is appropriate for a lizard, and the curve labeled _______ is appropriate for a mouse.As the environmental temperature these animals are subjected to rises from 10°C to 20°C, the metabolic rate of the lizard _______ and the metabolic rate of the mouse _______.

Accepted Answer

A)  A; B; increases; decreases 
B)  A; B; decreases; increases 
C)  B; A; increases; decreases 
D)  B; A; decreases; increases 
E)  B; A; decreases; decreases

Question 5

The mechanisms of homeostasis

Accepted Answer

A)  keep the internal physiological environment relatively constant regardless of external changes. 
B)  keep vital organs working at their maximum rate. 
C)  keep all cells working at the same metabolic rate. 
D)  keep the body's metabolic rate constant in varying environmental temperatures. 
E)  keep the temperature of all tissues in the body constant in varying environmental temperatures.

Question 6

The Q10 describes the temperature sensitivity of a reaction or a process.It is calculated by

Accepted Answer

A)  dividing the reaction or process rate at one temperature by the rate at a temperature 10°C lower. 
B)  dividing the reaction or process rate at one temperature by the rate at a temperature 10°C higher. 
C)  determining the basal temperature of an endotherm. 
D)  determining the upper temperature limit for survival of an organism. 
E)  determining the lower temperature limit for survival of an organism.

Question 7

Measurements of a fish's Q₁₀ made during the summer often do not accurately predict its actual metabolic rate as measured in the winter, because the animal has _______ to the seasonal change.

Accepted Answer

The answer of Measurements of a fish's Q₁₀ made during...

Question 8

If you find that a tissue in an organ is secreting mucus and absorbing nutrients, it is most likely _______ tissue.

Accepted Answer

A)  nervous 
B)  epithelial 
C)  connective 
D)  muscle 
E)  adipose

Question 9

In certain "hot" fish such as bluefin tuna, heat is exchanged between vessels carrying blood in opposite directions.This mechanism is called _______.

Accepted Answer

The answer of In certain "hot" fish such as bluefin...

Question 10

_______ feedback amplifies a response or increases deviation from a set point.

Accepted Answer

The answer of _______ feedback amplifies a response or increases...

Question 11

Which factor influences all four avenues of heat loss from an animal?

Accepted Answer

A)  The animal's surface temperature 
B)  The animal's core temperature 
C)  The amount of solar radiation 
D)  The substrate temperature 
E)  The air temperature

Question 12

Most endotherms are

Accepted Answer

A)  fishes and birds. 
B)  birds and crocodilians. 
C)  amphibians. 
D)  birds and mammals. 
E)  turtles.

Question 13

When a person is under anesthesia, he or she may experience _______ hypothermia.

Accepted Answer

The answer of When a person is under anesthesia, he...

Question 14

When faced with cold temperatures, an endotherm should

Accepted Answer

A)  groom to remove oil secretions on fur or feathers. 
B)  hold fur or feathers flat against the skin. 
C)  constrict blood vessels in the extremities. 
D)  allow water to displace air trapped near the skin under fur or feathers. 
E)  shut down countercurrent heat exchangers.

Question 15

Environmental temperature influences the body temperature of many animals, especially those that live in _______ environments.

Accepted Answer

The answer of Environmental temperature influences the body temperature of...

Question 16

Why would an endothermic animal's metabolic rate be higher at 40°C than at 30°C? What physiological phenomenon would explain why its metabolic rate rises when the environmental temperature is above the upper critical limit?

Accepted Answer

The answer of Why would an endothermic animal's metabolic rate...

Question 17

As part of a surveying expedition, you find a hummingbird with a loss-of-function mutation that prevents it from entering daily torpor.With all other variables the same, you would expect this hummingbird to _______ compared with a hummingbird that does not have this mutation.

Accepted Answer

A)  use less energy per day 
B)  starve to death because of using much more energy per day 
C)  be larger in size 
D)  have a longer period of winter hibernation 
E)  have a higher basal metabolic rate

Question 18

Bone is a type of _______ tissue.

Accepted Answer

A)  connective 
B)  epithelial 
C)  matrix 
D)  muscle 
E)  nervous

Question 19

The mechanism of heat transfer that occurs when two physical objects at different temperatures come into direct contact is called

Accepted Answer

A)  convection. 
B)  diffused radiation. 
C)  conduction. 
D)  evaporation. 
E)  direct radiation.

Question 20

Homeostatic mechanisms in the human body

Accepted Answer

A)  maintain absolute internal constancy. 
B)  are independent of the endocrine system. 
C)  are independent of the nervous system. 
D)  dampen fluctuations around a set point to keep internal conditions within a certain range. 
E)  depend upon a stable internal environment.

Exam 39: Physiology, Homeostasis, and Temperature Regulation

Which statement about glial cells is true?

Which type of tissue has a high mineral content?

Animals that can modulate their body temperatures by generating metabolic heat are called _______.

The mechanisms of homeostasis

The Q₁₀ describes the temperature sensitivity of a reaction or a process.It is calculated by

Measurements of a fish's Q₁₀ made during the summer often do not accurately predict its actual metabolic rate as measured in the winter, because the animal has _______ to the seasonal change.

If you find that a tissue in an organ is secreting mucus and absorbing nutrients, it is most likely _______ tissue.

In certain "hot" fish such as bluefin tuna, heat is exchanged between vessels carrying blood in opposite directions.This mechanism is called _______.

_______ feedback amplifies a response or increases deviation from a set point.

Which factor influences all four avenues of heat loss from an animal?

Most endotherms are

When a person is under anesthesia, he or she may experience _______ hypothermia.

When faced with cold temperatures, an endotherm should

Environmental temperature influences the body temperature of many animals, especially those that live in _______ environments.

Why would an endothermic animal's metabolic rate be higher at 40°C than at 30°C? What physiological phenomenon would explain why its metabolic rate rises when the environmental temperature is above the upper critical limit?

As part of a surveying expedition, you find a hummingbird with a loss-of-function mutation that prevents it from entering daily torpor.With all other variables the same, you would expect this hummingbird to _______ compared with a hummingbird that does not have this mutation.

Bone is a type of _______ tissue.

The mechanism of heat transfer that occurs when two physical objects at different temperatures come into direct contact is called

Homeostatic mechanisms in the human body

Exam 39: Physiology, Homeostasis, and Temperature Regulation

Which statement about glial cells is true?

Which type of tissue has a high mineral content?

Animals that can modulate their body temperatures by generating metabolic heat are called _______.

The mechanisms of homeostasis

The Q10 describes the temperature sensitivity of a reaction or a process.It is calculated by

Measurements of a fish's Q10 made during the summer often do not accurately predict its actual metabolic rate as measured in the winter, because the animal has _______ to the seasonal change.

If you find that a tissue in an organ is secreting mucus and absorbing nutrients, it is most likely _______ tissue.

In certain "hot" fish such as bluefin tuna, heat is exchanged between vessels carrying blood in opposite directions.This mechanism is called _______.

_______ feedback amplifies a response or increases deviation from a set point.

Which factor influences all four avenues of heat loss from an animal?

Most endotherms are

When a person is under anesthesia, he or she may experience _______ hypothermia.

When faced with cold temperatures, an endotherm should

Environmental temperature influences the body temperature of many animals, especially those that live in _______ environments.

Why would an endothermic animal's metabolic rate be higher at 40°C than at 30°C? What physiological phenomenon would explain why its metabolic rate rises when the environmental temperature is above the upper critical limit?

As part of a surveying expedition, you find a hummingbird with a loss-of-function mutation that prevents it from entering daily torpor.With all other variables the same, you would expect this hummingbird to _______ compared with a hummingbird that does not have this mutation.

Bone is a type of _______ tissue.

The mechanism of heat transfer that occurs when two physical objects at different temperatures come into direct contact is called

Homeostatic mechanisms in the human body

The Q₁₀ describes the temperature sensitivity of a reaction or a process.It is calculated by

Measurements of a fish's Q₁₀ made during the summer often do not accurately predict its actual metabolic rate as measured in the winter, because the animal has _______ to the seasonal change.