Complete Test Bank Multiple choice questions with answers for Psychopharmacology, 3rd Edition by R. H. Ettinger ; ISBN13: 9781032312873. (Full Chapters included Chapter 1 to 10)....
1. Organization and Function of the Nervous System. 2. Psychopharmacology. 3. Mood Disorders. 4. Anxiety and Stress-...
Test bank /
Multiple choice Questions with Answers
Psychopharmacology,
3rd Edition by R. H. Ettinger
Complete Chapters MC answers
are included (Ch 1 to 10)
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,Psychopharmacology
Chapter 1 Multiple Choice.
1. The average human brain contains nearly ________ neurons.
a. 10 billion
b. 100 billion
*c. 200 billion
d. 1 trillion
2. The three major classes of neurons are
*a. motor, sensory, and interneurons.
b. efferent, afferent, and glia.
c. motor, efferent, and afferent.
d. glia, interneurons, and motor.
3. The nucleus of a neuron resides within the
a. terminal button.
b. axon.
*c. cell body.
d. dendrites.
4. The axon hillock is located
a. at a cell’s terminal button.
b. at gaps in a cell’s myelin.
*c. where the axon leaves the cell body.
d. where dendrites connect to the cell body.
5. Myelin serves to
a. increase the speed of conduction along the axon.
b. insulate a cell’s axon from the electrical activity of adjacent axons.
c. synthesize and store neurotransmitter substances.
*d. Both a and b are correct
6. Neurotransmitters are stored and released from a cell’s
*a. terminal button.
b. node of Ranvier.
c. cell body.
d. axon hillock.
7. The pressures acting on charged ions include ________ and ________ pressures.
a. hydrostatic; electrostatic
b. diffusion; hydrostatic
*c. diffusion; electrostatic
d. diffusion; glucostatic
8. A neuron’s resting membrane potential is caused by
a. sodium ions.
*b. a disequilibrium of positive and negatively charged ions inside and outside the axon.
c. a high concentration of sodium inside the cell.
d. potassium ions.
, 9. The resting membrane potential has a charge of about ________ millivolts.
a. 0
b. +100
*c. –70
d. –55
10. The resting membrane potential is maintained because
a. potassium ions cannot cross through the cell membrane to the outside.
*b. sodium ions cannot cross to the inside of the cell membrane.
c. there is no pressure acting on sodium ions.
d. there is no pressure acting on potassium ions.
11. Potassium is said to be at equilibrium during a resting potential because
*a. electrostatic pressure forcing it in equals the diffusion pressure forcing it out.
b. diffusion pressure forcing it in equals the electrostatic pressure forcing it out.
c. hydrostatic pressure forcing it in equals the electrostatic pressure forcing it out.
d. it is equally concentrated inside and outside the cell.
12. Changes in the voltage of a cell that vary depending on the strength of stimulation are referred to as
a. action potentials.
b. depolarization.
c. hyperpolarization.
*d. graded potentials.
13. When an axon is depolarized to approximately ________ millivolts, an action potential is initiated.
*a. –55
b. –70
c. 0
d. +30
14. Ion channels for sodium ions open when the membrane is ________ to about ________ millivolts.
*a. depolarized; –55
b. polarized; –70
c. charged; +30
d. depolarized; 0
15. The initiation of an action potential is a consequence of an ________ of ________ ions.
a. influx; potassium
b. efflux; chlorine
*c. influx; sodium
d. All of the above are correct
16. During an action potential, the membrane voltage changes from ________ to about ________
millivolts on the inside relative to the outside.
a. –70; 0
b. 0; +50
*c. –70; +30
d. –70; +55
17. Local anesthetics such as lidocaine work by
a. preventing the release of neurotransmitters signaling pain messages.
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