Negative feedback Receptor Effector Departure from Return to resting level Resting level Positive feedback Further departure from resting level Receptor Effector Departure from Resting level FIGURE 5 iii) It is said that the initiation of an Action Potential is an example of positive feedback. With reference to the process involved, state why you think this statement is accurate?

Negative feedback Receptor Effector Departure from Return to resting level Resting level Positive feedback Further departure from resting level Receptor Effector Departure from Resting level FIGURE 5 iii) It is said that the initiation of an Action Potential is an example of positive feedback. With reference to the process involved, state why you think this statement is accurate?

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter16: The Body's System

Section: Chapter Questions

Problem 41CTQ: What are the main differences between the sympathetic and parasympathetic branches of the autonomic...

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A self-amplifying chain of physiologicalevents is calleda. positive feedback.b. negative feedback.c. dynamic constancy.d. homeostasis.e. metabolism.
In a homeostatically regulated system, diagram or identify the regulated homeostatic variable, sensor, control center, effector(s), and effector response(s).
Is the neural impulsegenerated by the stimulusthat triggers the arch reflexrestricted within the neuronsof this circuit?
An influx of positive sodium ions eventually causes closing of the inactivation gates of voltage regulated sodium channels, stopping the influx of positive sodium ions, and thus the final stages of an action potential are regulated by _____ feedback.
How do both negative and positive feedback contributeto the changes in membrane potential during an actionpotential?
What is the excitationthreshold of a neuron? Howdoes this threshold relate tothe “all-or-nothing” rule of theneural transmission?
An influx of positive sodium ions causes opening of the activation gates of voltage regulated sodium channels resulting in a further influx of positive sodium ions, and thus the initial stages of an action potential are regulated by ______ feedback.
Which of the following is the correct definition of positive feedback? 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.
Explain how the changes in Na+ and K+ ion concentrationsthat occur during an action potential are associated withdepolarization and repolarization.
Positive feedback processes invloves : a) Work in anticipation of changes in regulated variable b) Lead to instability of the regulated variable. c) Tend to force physiological variables back to set point, opposite direction of deviation d) Ten to force physiological variables away from their set point, further deviating it
___________ receive electrical impulses while ___________ conduct them to the next. regarding tranduction mechanisms in neurons.
What effect would you expect an antagonist that targets the voltage sensing domain of perisynaptic calcium channels of an inhibitory interneuron have on the firing frequency of a finically active neuron that interneuron synapses onto? Explain in details