CAMPBEL BIOLOGY:CONCEPTS & CONNECTIONS
10th Edition
ISBN: 9780136538820
Author: Taylor
Publisher: INTER PEAR
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Chapter 20, Problem 12TYK
Summary Introduction
To describe: The reason why the driver maintains a constant speed of 55 miles per hour while driving a car over a hilly terrain with reference to the concept of homeostasis.
Introduction: Homeostasis is a self-regulatory process; it is the tendency of an organism to seek and maintain the internal environment in response to external changes by maintenance of equilibrium and stability in the body or a system. The negative feedback mechanism of homeostasis reverses the unstable condition back to the normal condition and restores the stability or equilibrium. For example: When the salt concentration of blood goes up, the kidneys expel more salt.
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Chapter 20 Solutions
CAMPBEL BIOLOGY:CONCEPTS & CONNECTIONS
Ch. 20 - Connecting the Concepts 1. There are several key...Ch. 20 - True or false? Each cell in the human body is...Ch. 20 - Prob. 3TYKCh. 20 - Negative-feedback mechanisms are a. most often...Ch. 20 - Briefly explain how the structure of each of these...Ch. 20 - Describe ways in which the bodies of complex...Ch. 20 - Which of the following best illustrates...Ch. 20 - The diaphragm is a large sheet of muscle that...Ch. 20 - Prob. 9TYKCh. 20 - Prob. 10TYK
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- Define the term homeostasis . How does it differ from the term steady state ?arrow_forwardHomeostasis is the ability to maintain a steady and uniform internal environment to the external environmental changes. Discuss TWO examples of the homeostasis process in balancing human body system.arrow_forwardWhich of the following statements best describes homeostasis? a. Keeping the body in a fixed and unaltered state b. Dynamic equilibrium c. Maintaining a near-constant internal environment d. Altering the external environment to accommodate the body's needsarrow_forward
- Describe 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_forwardCompare and contrast the operation of negative and positive feedback mechanisms in maintaining homeostasis. Provide two examples of variables controlled by negative feedback mechanisms and one example of a process regulated by a positive feedback mechanism.arrow_forwardHuman body system is a powerful machine that works all the time. To maintain the system, homeostasis should function regularly. Give TWO (2) examples and discuss the factors that give effect to this selfregulating process.arrow_forward
- Write a long response that thoroughly explores examples of structure and function working together at the following levels in the interest of maintaining homeostasis: A – Organ B – Organ System C – Organism Be specific at each level of organization while keeping the greater good of the whole body in mind. If there was significant dysfunction at the organ level, predict how the effects of that flaw might ripple though higher levels of organization mentioned above? How might this affect the overall health of the person?arrow_forwardwhich of the following statements are true about homeostasis? Select all that apply. a. The selective permeability of the cell membrane allows for thermoregulation. b. Homeostasis is an organism‘s way of maintaining constant and balanced internal processes. c. Ectotherms rely on environmental heat to maintain homeostasis. d. Homeostasis works by a system of positive feedback.arrow_forwardWhich 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_forward
- Draw a figure illustrating the balance concept in homeostasis.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_forwardDescribe in your own words the important features of homeostasis using the following terms in your explanation: negative feedback, internal environment, receptor, controller and effector.arrow_forward
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