PSY 485 – Lecture 7
Practice Quiz #7
1. / What is the job of the neuron?a. Transmit information
b. store information
c. Integrate information
d. All the above
2. / The two basic processes involved in the communication network are:
a. conduction & neurotransmission
b. potentiation & transduction
c. transduction & conduction
d. neurotransmission & potentiation
3. / All of the following are descriptions of excitatory postsynaptic potential except ______?
a. more likely to fire
b. K+ influx
c. depolarization
d. Na+ influx
4. / Which of the following releases a chemical message?
a. Dendrites and soma
b. Axon
c. Axon terminal
d. Axon Carrier
5. / Which of the following, on a neuron is the point of interaction with the postsynaptic cell?
A. Soma
B. Axon Hillock
C. Axon
D. Axon terminals and Synapse
6. / Which one of these is not a type of gated channel?
a) voltage
b) cellular
c) chemical
d) mechanical
7. / In what case might a normal action potential "backfire" and originate in the axon terminal and end up in the cell body?
A. epilepsy
B. overdose on stimulant drugs
C. a neural disorder
D. this doesn't ever happen
8. / Which of the following is NOT a characteristic of Excitatory Postsynaptic Potential?
a) excitatory
b) depolarization
c) Na+ efflux
d)more likely to fire
9. / Depolarization of the membrane potential occurs during (an)______
Postsynaptic Potential.
a. Instantaneous
b. Excitatory
c. Decremental
d. Inhibitory
10. / IPSP's have all of the following characteristics, except...... ?
a.hyperpolarization
b.Em becomes more negative
c. makes neuron more likely to fire
d. has a K+ efflux
11. / Which part of the neuron is the initiating point of the action potential?
a. dendrites
b. soma
c. axon hillock
d. axon
12. / What happens when there is an influx in Na+ (Sodium) ions inside the cell?
a. Hyperpolarizaion occurs
b. An action potential more likely will occur
c. An action potential is less likely to occur
d. The resting potential becomes more negative
13. / The effects of a(n) ______last 1-2 miliseconds, while a(n) ______has a longer duration of 10-100 milliseconds.
a. Resting Membrane Potential, Integration
b. Integration, Resting Membrane Potential
c. Action Potential, Postsynaptic Potential
d. Postsynaptic Potential, Action Potential
14. / Out of the following, what is NOT true about EPSP?
a. inhibitory
b. depolarization
c. Na+ influx
d. more likely to fire
15. / When there are different concentrations of molecules on the two sides of the membrane, they travel from the high-concentration region to the low-concentration region. This force is referred to as:
a) electrostatic pressure
b) action potential
c) concentration gradient
d) propagation
16. / Which of the following would result in depolarization of the cells making up a neuron?
a. sodium influx
b. potassium efflux
c. chloride influx
d. production of negatively charged proteins by the cell
17. / Which of the following is not a characteristic of EPSP?
a. Excitatory
b. Depolarization
c. Less likely to fire
d. Na (+) influx
18. / A large and rapid all-or-none change in membrane potential occurs in the
a. axon
b. soma
c. dendrites
d. axon hillock
19. / What is LESS likely to trigger an action potential?
a IPSP
b depolarization
c more positive voltage
c EPSP
20. / Which of the characteristics for an Action Potential is NOT true:
a. they have voltage-gated channels
b. they are self-propagated
c. they are non-decremental
d. they have long-lived change in resting potential
Answer Key: Practice Quiz #7
Q # / Ans / Reference1. / D / lecture 7 p. 1
2. / A / Grilly ch. 4, p. 55
3. / B / lecture 7, slide 18
4. / C / Lecture 7 pg. 1
5. / D / Lecture 7 p1
6. / B / lecture 7, pg. 3
7. / A / Grilly, Chap. 4, p. 61
8. / C / lecture 7 page 3
9. / B / Lecture 7, p.3
10. / C / Lecture 7, page6
11. / C / Lecture 7
12. / B / Lecture 7, Page 6
13. / C / lecture # 7, pages 5 & 7
14. / A / lecture 7, slide 18
15. / C / Drugs and Human Behavior, p. 57
16. / A / lecture 7 notes, pg 3
17. / C / Lecture 7 slide 15
18. / A / lecture 7 page 4
19. / A / lecture 7, 3.
20. / D / Lecture 7 p. 4