Answered: 8. Contrast positive feedback and…

8. Contrast positive feedback and negative feedback. Tile 9. Which two body systems are charged with maintaining homeostasis by responding to changes in the environment? Tile

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter38: Introduction To Animal Organization And Physiology

Section: Chapter Questions

Problem 8TYK

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8. Contrast positive feedback and negative feedback.
Tile
9. Which two body systems are charged with maintaining homeostasis by responding to
changes in the environment?
Tile

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3. Which describes a difference between a positive and a negative feedback loop? The output of a system keeps conditions within the body absolutely constant only in a negative feedback loop. The output of a system stimulates another cycle of the system only in a positive feedback loop. The output of a system signals the system to disregard the stimulus only in a negative feedback loop. The output of a system maintains conditions around a set point only in a positive feedback loop.
7*
20) Why is positive feedback not a good way to maintain homeostasis?
1. Provide one example for hormonal, humoral, and neural stimulus. 2. Define homeostasis and negative feedback.
Select the statements that correctly describe negative feedback pathways. 1. A sensor/receptor is required to monitor and limit levels. 2. A sensor/receptor is unnecessary to monitor and limit levels. 3. Feedback contributes to homeostasis. 4. Feedback prevents homeostasis. 5. Feedback stimulates the effector to continue to do the same thing. 6. Feedback stops the effector from doing one thing and stimulates it to do the opposite. 7. When the target level for a hormone is reached, feedback results in an increase of that hormone being released. 8. When the target level for a hormone is reached, feedback results in a reduction of that hormone being released. Record your answers in ascending (lowest to highest) order.
Select the statements that correctly describe positive feedback pathways. 1. A sensor/receptor is required to monitor and limit levels. 2. A sensor/receptor is unnecessary to monitor and limit levels. 3. Feedback prevents homeostasis. 4. Feedback contributes to homeostasis. 5. Feedback stimulates the effector to continue to do the same thing. 6. Feedback stops the effector from doing one thing and stimulates it to do the opposite. 7. When the target level for a hormone is reached, feedback results in a reduction of that hormone being released. 8. When a target level for a hormone is reached, feedback results in an increase of that hormone being released. Record your answers in ascending (lowest to highest) order.
1. What is homeostasis? 2. Identify the components of a negative feedback mechanism. 3. When does positive feedback mechanism occur in the body? 6. Which of the following internal control systems is responsible in gathering information about the conditions inside and outside of the body? A. communicating system C. sensor B. control center D. thalamus 7. When there is an increase in the sugar level, negative feedback occurs in our body. What organ is responsible for releasing insulin to lower the sugar level? A. brain B. heart C. kidney D. pancreas 8. Which is the following is the best description of homeostasis? A. Maintenance of body function. B. Maintenance of body functions at the optimum level at all times. C. Keeping the body in balance D. Multiple systems working cooperatively to maintain body function within normal limits. 9. In which direction does an impulse travel along a neuron? A. from axon to axon C. from dendrite to axon B. from axon to dendrite D.…
During a cold snowy morning, Claire walks around the city a few meters away from her house. She starts shivering due to the cold environment. Due to the response of her body because of the intense cold, what type of feedback mechanism is it? 1. Positive 2. Negative
46. Which of the following correctly describes how positive and negative feedback are different? Negative feedback reverses changes in a system, while positive feedback amplifies changes in a system., Positive feedback occurs only in response to stimuli, while negative feedback can occur in the absence of stimuli. Positive feedback moves a system closer to its set point, while negative feedback moves a system further from its set point. Negative feedback requires the detection of stimuli, while positive feedback functions independently of stimuli.
Define: homeostasis What is a negative feedback loop? What is a positive feedback loop? Which of those two is rare?
In your own words, explain the negative feedback loop of your body on a hot LA day. Answer using a few sentences.
Choose a negative feedback loop and state the 5 components. Explain how positive feedback is different from negative feedback and give an example of positive feedback.