Skip to Main Content

++

QUESTIONS

++

Section I: Chapters 1 through 3

++

In the following questions, select the single best answer.

++
++
++

1. The basic neuronal signaling unit is–

++
++
++

 A. the equilibrium potential

++
++

 B. the action potential

++
++

 C. the resting potential

++
++

 D. the supernormal period

++
++
++

2. In a motor neuron at rest, an excitatory synapse produces an EPSP of 15 mV, and an inhibitory synapse produces an IPSP of 5 mV. If both the EPSP and IPSP occur simultaneously, then the motor neuron would–

++
++
++

 A. depolarize by about 10 mV

++
++

 B. depolarize by 20 mV

++
++

 C. depolarize by more than 20 mV

++
++

 D. change its potential by less than 1 mV

++
++
++

3. The equilibrium potential for K+ in neurons is ordinarily nearest–

++
++
++

 A. the equilibrium potential for Na+

++
++

 B. resting potential

++
++

 C. reversal potential for the EPSP

++
++

 D. the peak of the action potential

++
++
++

4. Generation of the action potential–

++
++
++

 A. depends on depolarization caused by the opening of K+ channels

++
++

 B. depends on hyperpolarization caused by the opening of K+ channels

++
++

 C. depends on depolarization caused by the opening of Na+ channels

++
++

 D. depends on hyperpolarization caused by the opening of Na+ channels

++
++

 E. depends on second messengers

++
++
++

5. The cerebrum consists of the–

++
++
++

 A. thalamus and basal ganglia

++
++

 B. telencephalon and midbrain

++
++

 C. telencephalon and diencephalon

++
++

 D. brain stem and prosencephalon

++
++

 E. cerebellum and prosencephalon

++
++
++

6. The somatic nervous system innervates the–

++
++
++

 A. blood vessels of the skin

++
++

 B. blood vessels of the brain

++
++

 C. muscles of the heart

++
++

 D. muscles of the body wall

++
+...

Pop-up div Successfully Displayed

This div only appears when the trigger link is hovered over. Otherwise it is hidden from view.