Under normal conditions a nerve impulse is initiated by an appropriate stimulus called:

Related Mcqs:

1. The neuron conducts the impulse in the form of nerve impulse during:

   A. Threshold potential B. Active membrane potential C. Resting membrane potential D. All of the above...

2. Which THREE of the following are true regarding habituation and dishabituation?
   1:Habituation involves a gradual reduction in the magnitude of the response to repeated presentation of the response of a stimulus
   2:In dishabituation, the response returns when a salient extraneous stimulus is presented just before a trial with the habituated stimulus
   3:Habituation is caused by sensory-motor fatigue
   4:Habituation occurs as a consequence of the repeated presentation of a single event

   A. 1,2 & 3 B. 2,3 & 4 C. 1,2 & 4 D. 4...

3. A neural impulse is initiated when neuron’s charge momentarily becomes less negative or even positive. This event is called:

   A. an action potential B. a resting potential C. impulse facilitation D. inhibitory...

4. The conduction of a nerve impulse down the axon is called a (n):

   A. ion potential B. action potential C. resting discharge D. synapse...

5. A membrane potential of_________volts exits when a neuron is not conducting a nerve impulse:

   A. 0.05 B. 0.07 C. 0.05 to 0.07 D. 1...

6. The passage of nerve impulse is associated with increase in permeability of which of the following ion:

   A. Sodium B. Potassium C. Organic ions D. Inorganic ions...

7. A physical stimulus is converted into a neural impulse by a process ____________?

   A. transposition B. transduction C. transition D. transference...

8. The ability to distinguish between a conditioned stimulus and similar stimuli that do not signal an unconditioned stimulus is called __________________?

   A. shaping B. acquisition C. discrimination D. generalization...

9. The idea that the amount of change in a stimulus necessary to produce a JND is a constant proportion of the stimulus intensity is called:

   A. James law B. The all-or-none principle C. The law of diminishing returns D. Weber’s law...

10. The nature of a nerve impulse is primarily a/an _____________ event; communication between neurons is primarily a/an_____________

    A. chemical; electrical B. acetylcholine, catecholamine C. dendrite; axon D. electrical; chemical...