Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 38, Problem 8TYK
Summary Introduction
Introduction:
Homeostasis is a mechanism in which the changes in environment are compensated through internal adjustments. It is the regulation of internal environment, maintaining it in a steady constant state. There are the negative feedback mechanisms that include sensors that detect change in the environment; integrator compares it to the reference point, and effector that works to bring the condition to the set reference point by making some compensations. When the change is brought to normal state, the compensatory response is stopped.
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Chapter 38 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 38.1 - Prob. 1SBCh. 38.1 - Prob. 2SBCh. 38.2 - Prob. 1SBCh. 38.2 - What are the six major types of connective tissue...Ch. 38.2 - Prob. 3SBCh. 38.3 - Prob. 1SBCh. 38.4 - Prob. 1SBCh. 38 - Which tissue type consisting of sheetlike layers...Ch. 38 - Which of the following is a constant source of...Ch. 38 - A flexible, rubbery protein in connective tissue...
Ch. 38 - Prob. 4TYKCh. 38 - Prob. 5TYKCh. 38 - Lifting weights will most increase the size of:...Ch. 38 - Which muscle types appear striated under a...Ch. 38 - Prob. 8TYKCh. 38 - Prob. 9TYKCh. 38 - Prob. 10TYKCh. 38 - Prob. 11TYKCh. 38 - Prob. 12TYKCh. 38 - Discuss Concepts Near the time of childbirth,...Ch. 38 - Prob. 14TYKCh. 38 - 15. What effect do you think a program of lifting...Ch. 38 - The regulation of temperature in mammals and birds...Ch. 38 - Prob. 17TYKCh. 38 - Prob. 1ITD
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- When faced with a sudden drop in environmental temperature, an endothermic animal will _______. a. experience a drop in its body temperature b. wait to see if it goes lower c. increase muscle activity to generate heat d. add fur or fat to increase insulationarrow_forwardThe hormone insulin enhances the transport of glucose (sugar) from the blood into most body cells. Its secretion is controlled by a negative-feedback system between the concentration of glucose in the blood and the insulin-secreting cells. Therefore, which of the following statements is correct? A decrease in blood glucose concentration stimulates insulin secretion, which in turn further towers blood glucose concentration. An increase in blood glucose concentration stimulates insulin secretion, which in turn lowers blood glucose concentration. A decrease in blood glucose concentration stimulates insulin secretion, which in turn increases blood glucose concentration. An increase in blood glucose concentration stimulates insulin secretion, which in turn further increases blood glucose concentration. None of the preceding is correct.arrow_forwardWhat could happen due to a failure in homeostasis? Select one: a. The accumulation of waste products. b. The loss of excess water from the body. c. Maintaining excess levels of sugar in the body. d. All of the above are potential outcomes of failure of homeostasis.arrow_forward
- Which of the following statements is True?a. Ectotherms generate most of their body heatmetabolically.b. Ectotherms include birds and mammals.c. Ectotherms experience variable body temperatures.d. Ectotherms are known as “warm-blooded” animals.arrow_forwardWhich of the following is an example of a negative feedback loop? a) shivering in response to a cold b)platelets responding to a cut c) childbirth d) lactationarrow_forwardThe body’s thermostat is located in the ________. a. homeostatic receptor b. hypothalamus c. medulla d. vasodilation centerarrow_forward
- You are studying a large tropical reptile that has a high and relatively stable body temperature. How do you determine whether this animal is an endotherm or an ectotherm? (A) You know from its high and stable body temperature that it must be an endotherm. (B) You subject this reptile to various temperatures in the lab and find that its body temperature and metabolic rate change with the ambient temperature. You conclude that it is an ectotherm. (C) You note that its environment has a high and stable temperature. Because its body temperature matches the environmental temperature, you conclude that it is an ectotherm. (D) You measure the metabolic rate of the reptile, and because it is higher than that of a related species that lives in temperate forests, you conclude that this reptile is an endotherm and its relative is an ectotherm.arrow_forwardRead the following scenario and determine the parts of the homeostasis feedback loop. When a human increases physical activity, the amount of fuel burned in its cells also increases, which in turn increases the concentration of dissolved CO2 in the blood. The CO2 reacts with water in the blood to make a weak acid, which lowers the pH of the blood. Sensory cells in the aortic arch register this drop in pH and send sensory information to the medulla oblongata of the brain. The medulla oblongata sends signals to the diaphragm to increase respiration. This will clear the CO2 from the bloodstream. A. Name the stimulus in this scenario. B. Explain what a receptor is in the homeostasis feedback loop and name the receptor in this scenario. C. Explain what an integrating center is in the homeostasis feedback loop and name integrating center in this scenario. D. Explain what an effector is in the homeostasis feedback loop and name the effector in this scenario. E. Name the response in this…arrow_forwardWhich of the following is not a way that ectotherms can change their body temperatures? a. Sweating for evaporative cooling. b. Adjusting the timing of their daily activities. c. Seek out or avoid direct sunlight. d. Huddle in a group.arrow_forward
- Which of the following is not true for f negative feedback loops? A. In a negative loop, the response to the signal or stimulus decreases the original signal or stimulus. B. Negative feedback loops maintain homeostasis. C. Negative feedback loops are temporary. D. There are many more instances of negative feedback loops in the human body than positive feedback loops.arrow_forwardIn a negative feedback mechanism,a. the output cancels the input.b. there is a fluctuation above and below the average.c. there is self-regulation.d. a regulatory center communicates with other body parts.e. All of these are correct.arrow_forwardWhich of the following occurs in the legs of goose (bird) standing on a frozen pond? Group of answer choices A. Warm blood from the body flows toward the legs of the bird. B. Cool blood from the feet flows toward the body of the bird. C. Heat is transferred from warm blood to cooler blood, reducing loss of heat to the environment. D. A and C E. A, B, and Carrow_forward
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