Answered: Which of the following changes to an…

Which of the following changes to an action potential indicates a larger stimulus? a. Increased frequency b. Increased wavelength c. Increased amplitude d. Increased speed

Body Structures & Functions Updated

13th Edition

ISBN:9780357191606

Author:Scott

Publisher:Scott

Chapter9: Peripheral And Autonomic Nervous System

Section: Chapter Questions

Problem 1RQ

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Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.

Question

Which of the following changes to an action potential indicates a larger stimulus?

a. Increased frequency

b. Increased wavelength

c. Increased amplitude

d. Increased speed

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MC: Which of the following changes to an action potential indicates a larger stimulus? Increased frequency Increased wavelength Increased amplitude Increased speed
Which of the following is true regarding the difference between graded and action potentials? a.) Action potential occur only when the surface of the neuron is myelinated, but graded potentials occur in both in both myelinated and non-myelinated neurons. b.) The magnitude of action potential depends on the magnitude of the stimulus, whereas graded potentials are all or none. c.) The magnitude of graded potential depends on the magnitude of the stimulus, whereas action potentials are all or none.
Fill in the blank: The moment following the passage of an action potential during which a threshold stimulus will not triggeranother impulse is called the ___________________ period.
Based on the graph, how soon could another action potential be easily initiated (at the end of the relative refractory period) after the first stimulus? (Base your answer to this question on the graph below depicting an action potential.) less than 0.5 msec 1 msec 2 msec 3 msec 4 msec
Explain how stimulus intensity can be coded by action potentials if all action potentials are identical.
Given what you already know about the sensation of pain, what is the expected change in membrane potential when pain is felt by sensory receptors? Select one: a. The nerve impulses increase in strength and lower the threshold potential. b. The nerve impulses occur more frequently, thereby transmitting more action potentials according to the intensity of pain. c. The nerve impulses occur more frequently and prevent neurons from entering the refractory period. d. The nerve impulses increase in strength, thereby making the maximum membrane potential higher than normal.
increases the probability of producing an action potential, where a ________ decreases the probability of producing an action potential. A. threshold; hyperpolarization B. repolarization; depolarization C. depolarization; hyperpolarization D. hyperpolarization; depolarization E. depolarization, repolarization
What is/are true statements about Action Potentials? Select all that apply. Group of answer choices: A. action potentials propagate down axons B. information is coded through the frequency of action potentials C. action potentials are slower in myelinated axons D. action potentials vary depending on the strength of the stimulus
What is/are true statements about Action Potentials? Select all that apply. Group of answer choices: A. action potentials propagate down axons B. nformation is coded through the frequency of action potentials C. action potentials are slower in myelinated axons D. action potentials vary depending on the strength of the stimulus
What effect would a WEAKER stimulus have on C? a. Greater amplitude (height) b. Lower amplitude c. Narrower curve d. No change e. Wider curve
Nerve membrane hyperpolarization after an action potential a)Is the movement of membrane potential voltage below normal resting potential voltage. b) This Is mostly due to the slow-closing of K+ channels. c)Makes it more difficult to evoke another action potential. d) This Is mostly due to the slow-closing of Na+ channels.
During the refractory period a) if a neuron reaches threshold the action potential goes to completion b) No stimulus of any strength will trigger a new action potential c) It is possible to trigger a new action potential but only with an unusually strong stimulus d) The signal grows weaker with distance e) The neuron fires at its maximum voltage if a stimulus depolarizes the neuron to threshold