Chapter 42 – The Animal Body and Principles of Regulation
42–41
59. Effector
Clarify Question
What is the key concept addressed by the question?
What type of thinking is required?
Gather Content
What do you already know about positive feedback? What other information is related to
the question?
Choose Answer
Given what you now know, what information is most likely to produce the correct answer?
Reflect on Process
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 42 – The Animal Body and Principles of Regulation
42–42
60. Integrating Center
E or
E. brain receives and compares stretch information
Clarify Question
What is the key concept addressed by the question?
• This question is asking about the components of a positive feedback loop.
What type of thinking is required?
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the question?
Choose Answer
Given what you now know, what information is most likely to produce the correct answer?
Reflect on Process
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 42 – The Animal Body and Principles of Regulation
42–43
61. Response
B or
B. uterine contractions increase
Clarify Question
What is the key concept addressed by the question?
What type of thinking is required?
Gather Content
What do you already know about positive feedback? What other information is related to
the question?
Choose Answer
Given what you now know, what information is most likely to produce the correct answer?
Reflect on Process
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 42 – The Animal Body and Principles of Regulation
42–44
62. Stimulus
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the question?
Choose Answer
Given what you now know, what information is most likely to produce the correct answer?
Reflect on Process
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 42 – The Animal Body and Principles of Regulation
Multiple Choice Questions
Adult giraffes can be up to 20 ft. tall, and thus require special adaptations to maintain
appropriate blood pressure. One adaptation is the rete mirabile, a group of blood vessels that
form a web or net-like structure to slow blood flow.
63. The giraffe, as the tallest living land animal, has several adaptations for its height. To
prevent blood from pooling in the head when it bends down to drink, the jugular veins of a
giraffe have multiple one-way valves. Furthermore, a web of arteries and veins in the neck
called the rete mirabile (“wonderful net”) slows the flow of blood into the brain. These
specializations of the ______________________ act as mechanisms to maintain
______________________.
Chapter 42 – The Animal Body and Principles of Regulation
42–46
Clarify Question
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What type of thinking is required?
Gather Content
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related to the question?
Choose Answer
Given what you now know, what information is most likely to produce the correct answer?
Reflect on Process
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 42 – The Animal Body and Principles of Regulation
64. Although especially useful to the giraffe, the rete mirabile is similar to a countercurrent
heat exchange system in other related, less evolved, mammals. Thus a mechanism for
_________________ homeostasis is likely to have evolved from a mechanism previously
used for __________________ homeostasis.
Chapter 42 – The Animal Body and Principles of Regulation
42–48
Clarify Question
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What type of thinking is required?
Gather Content
What do you already know about the circulatory system? What other information is related
to the question?
Choose Answer
Chapter 42 – The Animal Body and Principles of Regulation
Given what you now know, what information is most likely to produce the correct answer?
Reflect on Process
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
65. Low body temperature triggers adaptive responses to conserve heat. Once the integrating
center detects that body temperature has risen, it will decrease these responses. What does this
exemplify?
Chapter 42 – The Animal Body and Principles of Regulation
66. Due to a mutation in a smooth muscle gene, the blood vessels in the skin of a certain
strain of mouse become dilated when temperature falls below a certain point. Based on the
likely outcome of this mutation, what precautions should the researchers take to maintain the
health of their mice?
Chapter 42 – The Animal Body and Principles of Regulation
42–51
Clarify Question
What is the key concept addressed by the question?
What type of thinking is required?
• Evaluate level:
Gather Content
What do you already know about mammalian body temperature? What other information
is related to the question?
Choose Answer
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Reflect on Process
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process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 42 – The Animal Body and Principles of Regulation
67. Which statement describes a home heating and cooling system that functions in a
homeostatic way?
68. Mechanisms that help generate heat and those that allow release of heat are an example of
____________________. Collectively, these mechanisms increase the __________________
of body temperature.
Chapter 42 – The Animal Body and Principles of Regulation
69. Why do some bread recipes suggest letting the dough rise in a warm place after
kneading?