EBK BIOLOGY
5th Edition
ISBN: 8220100667978
Author: Maier
Publisher: PEARSON
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Chapter 17, Problem 1AAATB
Summary Introduction
To write:
A hypothesis that explains the reason for “shivering “when cold may promote homeostasis’
Introduction:
Homeostasis signifies the capability towards a comparatively steady equilibrium amongst interdependent elements, mainly sustained by physiological procedures.
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The regulation of temperature in mammals and birds is an example of homeostatis. Design an experiment to observe and measure processes involved in temperature homeostatis in sedentary versus athletic humans during exercise.
If the blood temperature falls too low, this is also sensed by the brain and signals are sent to the cutaneous
arteries (those supplying the skin) to constrict them. Warm blood is then retained deeper in the body and
less heat is lost from the surface. If this is inadequate, the brain activates shivering. Each muscle tremor in
shivering releases heat energy and helps warm the body back toward its 98.6 degrees set point.
• This is an example of
a. a negative feedback loop
b. a positive feedback loop
Describe what is meant by a trade-off in physiologicalfunctions, and give an example.
Chapter 17 Solutions
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- If daytime body temperature of some ectotherms were measured, the values would be fairly constant. Provide an explanation for such observations, giving some possible mechanisms that might be involvedarrow_forwardConsider an experiment in which subjects are given a pill to test its effectiveness in reducing the duration of a cold. Which of the following is the best way to treat the control group? (a) Give the control group two pills instead of one. (b) Do nothing with the control group. (c) Give the control group a pill that looks like the test pill but does nothing. (d) Let the control group choose whether or not to take any pills. (e) Expose the control group to the cold virus.arrow_forwardWhat is meant by the experimental ablation method of studying the brain? a. The approach in which identical experiments are conducted on numerous animals simultaneously b. The approach in which experiments are conducted on animal species to understand the function of the human brain c. The approach in which the brain is preserved with fixatives such as formaldehyde, sliced thin, and then studied with a microscope Od. The approach in which parts of the brain are systematically destroyed to determine their functionarrow_forward
- Which of the following is a way that the body determines how much of a certain chemical, protein, enzyme, or response is needed to maintain homeostasis? A. Resource limitation, B. Feedback inhibition, C. Kickback inhibition, D. Signal looparrow_forwardDraw a figure illustrating the balance concept in homeostasis.arrow_forward“As a caterpillar, having reached the end of a blade of grass, takes hold of another blade, then draws its body from the first, so the Self, having reached the end of his body, takes hold of another body, then draws itself from the first.” What kind of process is the caterpillar going through that the quote describes? EXPLAIN YOUR ANSWER *arrow_forward
- Explain the following statement. “All systems of the body contribute to homeostasis.” Use an ANALOGY of DAILY LIFE and give an example of a negative feedback loop.arrow_forwardWhat does negative feedback do? a. It establishes a set point. b. It changes the set point. c. It eliminates the set point. d. It reduces discrepancies from a set point.arrow_forwardAn example of acclimatization is: Group of answer choices long limbs high body mass short limbs shiveringarrow_forward
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