Campbell Essential Biology with Physiology (6th Edition)
6th Edition
ISBN: 9780134711751
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
Publisher: PEARSON
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Chapter 21, Problem 10SQ
Explain the similarities between how your body temperature is maintained and how a thermostat regulates temperature in a home.
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Body temperature is homeostatically regulated around a set point. Given your knowledge of negative feedback and homeostatic control systems, predict whether narrowing or widening of the blood vessels of the skin will occur when a person exercises strenuously. (Hints: Muscle contraction generates heat. Narrowing of the vessels supplying an organ decreases blood flow through the organ, whereas vessel widening increases blood flow through the organ. The more warm blood flowing through the skin, the greater is the loss
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In the negative feedback system for regulation of body temperature. Identify the following. 1. Stimulus 2. Receptor 3. Control Center 4. Effector 5. Response
Chapter 21 Solutions
Campbell Essential Biology with Physiology (6th Edition)
Ch. 21 - Which is likely to be a more common cancer in an...Ch. 21 - Prob. 2SQCh. 21 - Prob. 3SQCh. 21 - Prob. 4SQCh. 21 - State whether each statement below is an example...Ch. 21 - While visiting a farm on a hot summer day, you see...Ch. 21 - Prob. 7SQCh. 21 - Prob. 8SQCh. 21 - What happens to most of the water that passes from...Ch. 21 - Explain the similarities between how your body...
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- z uousənO In terms of homeostasis, what is the most likely response to an increase in environmental temperature? Blood vessel constriction "Goosebump" formation Producing Sweat shivering and muscle contractionarrow_forwardThe maintenance of bodily equilibrium is called thermostasis. True or False?arrow_forwardDescribe the steps in the homeostatic feedback system activated to ensure normal body temperature is maintained when exposed to a hot external temperature (e.g., 42 degrees Celsius). Give typing answer with explanation and conclusionarrow_forward
- Endothermy and Ectothermy are two strategies that organisms use to generate or maintain their internal body temperature. An ectotherm is an organism that derives very little of its body temperature internally, and relies on the environment for heat. An endotherm is an organism that maintains its own body at a metabolically favorable temperature by internal means. Question: How does temperature affect endotherms and ectotherms differently? Describe the evidence that will help you make a claim about the question: How does temperature affect endotherms and ectotherms differently?arrow_forwardMatch the body temperature control item to the appropriate location in the negative feedback loop. Effector when variable is low Effector when variable is high Control center Sensor Controlled variable A. Muscles for shivering and goosebumps B. Nerves in skin C. Brain D. Sweat glands E. Temperaturearrow_forwardExplain the control of body temperaturearrow_forward
- *What's your normal body temperature? It may not be 98.6 °F, the often-quoted average that was determined in the nineteenth cen- tury. A more recent study has reported an average temperature of 98.2 °F. What is the difference between these averages, expressed in Celsius degrees?arrow_forwardDescribe what happens in an endotherm and an ectotherm when outside temperature gets cold, and what happens when it gets hot.arrow_forwardwhy is it important to regulate body temperature?arrow_forward
- Which of the following is an example of homeostasis? Choose all answers that are correct as there may be more than one correct answer. Show answer choices The body shivering when outside in the cold. The release of insulin after a meal to encourage your body to absorb the sugar from your blood, thus lowering your blood sugar. Producing sweat when outside on a hot day that can evaporate into the air. Breathing faster while exercising to add more oxygen to the blood and remove excess carbon dioxide from the blood. Stretch receptors in your blood vessels detect when blood pressure is high and send signals to increase the diameter of your blood vessels and reduce the output from the heart to lower your blood pressure.arrow_forwardWhat do you know about body’s thermostat? Write a detailed note on physiological response to Heat Load and Cold stress.arrow_forwardWhen body temperature decreases below the normal range, thermoreceptors in the skin and hypothalamus detect the decrease in body temperature. The heat-promoting center of the hypothalamus is activated, which sends signals to blood vessels and skeletal muscles. In response, blood vessels in the skin constrict and skeletal muscles shiver. Determine the part of this negative feedback loop that serves as the control center. O thermoreceptors O hypothalamus blood vessels and skeletal muscles O body temperaturearrow_forward
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