Which of the following is the correct definition of positive feedback? aThe process by which the body neglects homeostasis. bA mechanism in which the body's response to a stimulis opposes the stimulus. cA mechanism whereby the body responds to a stimulus by acting to enhance the stimulus dThe dynamic equilibrium maintained by an integrating center which causes an effector to respond to the stimulus received by the receptor.

C- A mechanism whereby the body responds to a stimulus by acting to enhance the stimulus

Answered: Which of the following is the correct…

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter13: The Nervous System

Section: Chapter Questions

Problem 7SQ

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Which of the following statements is CORRECT in describing the positive feedback control systems in our body? Group of answer choices The response counteracts the stimulus, shutting off the response loop. The response reinforces the stimulus, sending the variable farther from the set-point. The response is able to move the variable closer to the set-point. The response is able to move the variable farther from the set-point by suppressing the stimulus.
In negative feedback systems the receptor sends a negative signal the stimulus is increased or amplified the effector reduces or eliminates the stimulus the control center receives input from the effector the receptor increases or enhances the stimulus
Which of the following ends a positive feedback loop? When the initial stimulus lessens in intensity When an enhancement of the initial stimulus continues When the initial stimulus ends When the variable that was increased at the beginning is now back at homeostatic levels
What component of control mechanism produces a response in the body? Group of answer choices stimulus control center receptor effectors
In a negative feedback loop, the effector moves the system in the direction as the stimulus.
Generally speaking, in homeostasis, when there is an adverse or disrupting external stimulus all variables are maintained within a narrow range simultaneously all variables will be maintained in stable condition the variable related to the stimulus will be altered to counteract the stimulus, often at the expense of other variables the variable related to the stimulus will be altered without involving any other variables
Which of the following best describes the behavior of a gated channel? It stays open continuously when stimulated. It opens more frequently in response to a given stimulus. It opens more widely as the stimulus becomes stronger. It requires a stimulus to change from closed to open
Which of the following stimuli (s) produces only a local potential and no action potential? Group of answer options Maximum stimuli Threshold stimuli Below the threshold (subthreshold) Supramaximal stimuli
If the nervous system finds a particular pathway is inaccessible, it will: Continue to use that pathway to send messages to and from other parts of the body. Try to find or create a new pathway to send the signal to or from other parts of the body. Use the muscles to send a signal without the use of the nervous system. None of the above.
Boy temperature decreases homostatic disruption person falls in a cold take in the winter muscles contract/shiver and blood vessels contract hypothalamus partof brain thermorecaptors in hypothalamus muscles and blood vessles homeostatasis body temperature increases in heat to produced from shivering Does these definitions go with receptor control center stimulus homosatasis respone effector homeostasis disruption
Which of the following is comparable to a negative feedback cycle? opening of voltage-gated Na" channels in response to a depolarizing graded potential movement of K* through leak channels opening of voltage-gated K* channels in response to a depolarizing graded potential operation of the Na -K ATPase at rest opening of voltage-gated Ca- channels in response to an action potential arriving at the axon terminal
A response is the body's reaction to the stimulus. What's the response in these situations? Stimulus: You hear a loud noise · A large dog runs toward you, growling and barking You eat a large candy bar You have not eaten in six hours You have strep throat

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	a	The process by which the body neglects homeostasis.
	b	A mechanism in which the body's response to a stimulis opposes the stimulus.
	c	A mechanism whereby the body responds to a stimulus by acting to enhance the stimulus
	d	The dynamic equilibrium maintained by an integrating center which causes an effector to respond to the stimulus received by the receptor.