Question 1

Gases can be used as neurotransmitters.

Accepted Answer

A) True 
 B)False

Question 2

If a drug has high affinity and high efficacy, what effect does it have on the postsynaptic neuron?

Accepted Answer

A)   antagonistic
B)   agonistic
C)   proactive
D)   destructiveE) B) and D)
F) A) and D)

Question 3

Our brains respond to plant chemicals because:

Accepted Answer

A)   plants use chemicals similar to neurotransmitters.
B)   animals evolved from plants.
C)   plants have evolved neuron-like cells.
D)   those are the only chemicals that are stable at common environmental temperatures.E) B) and C)
F) A) and D)

Question 4

A drug that blocks the effects of a neurotransmitter is an agonist.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following is NOT a factor in determining whether or not two EPSPs combine to reach threshold?

Accepted Answer

A)   size of the EPSPs
B)   timing between them
C)   threshold of the postsynaptic cell
D)   threshold of the presynaptic cellE) A) and B)
F) A) and C)

Question 6

Neurotransmitter is to ____ as cyclic AMP is to ____.

Accepted Answer

A)   first messenger, second messenger
B)   second messenger, first messenger
C)   metabotropic, ionotropic
D)   receptor, neuromodulatorE) A) and B)
F) None of the above

Question 7

Which effect is consistently associated with a "second messenger"?

Accepted Answer

A)   ionotropic
B)   metabotropic
C)   inhibitory
D)   excitatoryE) B) and D)
F) B) and C)

Question 8

Which of the following is TRUE about the spontaneous firing rates of neurons?

Accepted Answer

A)   EPSPs increase the frequency.
B)   EPSPs decrease the frequency.
C)   IPSPs increase the frequency.
D)   One EPSP equals the effect of two IPSPs.E) C) and D)
F) A) and C)

Question 9

In addition to influencing other neurons, ____ dilates the nearby blood vessels, thereby increasing blood flow to that area of the brain.

Accepted Answer

A)   endorphins
B)   glycine
C)   nitric oxide
D)   acetylcholineE) A) and B)
F) None of the above

Question 10

Depolarization is to ____ as hyperpolarization is to ____.

Accepted Answer

A)   excitation; inhibition
B)   inhibition; excitation
C)   increasing the threshold; decreasing the threshold
D)   decreasing the threshold; increasing the thresholdE) None of the above
F) A) and B)

Question 11

To measure temporal summation in single cells, researchers:

Accepted Answer

A)   attach electrodes to the scalp.
B)   insert an microelectrode into the scalp.
C)   collect sodium and potassium ions from nearby glial cells.
D)   record depolarizations of the postsynaptic neuron.E) B) and C)
F) None of the above

Question 12

Describe the main properties of neuropeptides (neuromodulators).

Accepted Answer

The answer of Describe the main properties of neuropeptides (neuromodulators)....

Question 13

Even at rest, most neurons have periodic production of action potentials, known as the:

Accepted Answer

A)   spontaneous firing rate.
B)   excitatory firing rate.
C)   all-or-none law.
D)   Dale's principle.E) A) and B)
F) A) and C)

Question 14

Describe the sequence of events that occurs in synaptic transmission.

Accepted Answer

Synthesis, storage, ...

Question 15

The proper order of a reflex arc is:

Accepted Answer

A)   motor neuron, sensory neuron, interneuron.
B)   sensory neuron, motor neuron, interneuron.
C)   motor neuron, interneuron, sensory neuron.
D)   sensory neuron, interneuron, motor neuron.E) A) and D)
F) A) and C)

Question 16

Which of the following is NOT a likely effect of using marijuana?

Accepted Answer

A)   memory loss
B)   decreased nausea
C)   reduced risk of Parkinson's disease
D)   suppressed appetiteE) None of the above
F) A) and B)

Question 17

What is the synaptic cleft?

Accepted Answer

A)   the gap between the presynaptic neuron and the postsynaptic neuron
B)   a packet that stores neurotransmitter molecules
C)   a subthreshold depolarization
D)   the storage location for calcium ionsE) A) and B)
F) B) and C)

Question 18

A drug that relaxes a person and makes them less sensitive to pain is most likely a(n) :

Accepted Answer

A)   opiate.
B)   hallucinogen.
C)   stimulant.
D)   cannabinoid.E) All of the above
F) A) and D)

Question 19

Briefly describe spatial summation.

Accepted Answer

The answer of Briefly describe spatial summation....

Question 20

Dopamine and norepinephrine are classified as:

Accepted Answer

A)   second messengers.
B)   purines.
C)   proteins.
D)   catecholamines.E) A) and B)
F) B) and C)

Exam 3: Synapses

Describe the sequence of events that occurs in synaptic transmission.

Correct AnswerverifiedSynthesis, storage, ...View AnswerShow Answer

Which effect is consistently associated with a "second messenger"?

Correct AnswerverifiedShow Answer

A drug that relaxes a person and makes them less sensitive to pain is most likely a(n) :

Correct AnswerverifiedShow Answer

Dopamine and norepinephrine are classified as:

Correct AnswerverifiedShow Answer

Which of the following is NOT a factor in determining whether or not two EPSPs combine to reach threshold?

Correct AnswerverifiedShow Answer

Gases can be used as neurotransmitters.

Correct AnswerverifiedShow Answer

Depolarization is to ____ as hyperpolarization is to ____.

Correct AnswerverifiedShow Answer

Even at rest, most neurons have periodic production of action potentials, known as the:

Correct AnswerverifiedShow Answer

The proper order of a reflex arc is:

Correct AnswerverifiedShow Answer

Briefly describe spatial summation.

Correct AnswerverifiedShow Answer

Our brains respond to plant chemicals because:

Correct AnswerverifiedShow Answer

Which of the following is NOT a likely effect of using marijuana?

Correct AnswerverifiedShow Answer

A drug that blocks the effects of a neurotransmitter is an agonist.

Correct AnswerverifiedShow Answer

To measure temporal summation in single cells, researchers:

Correct AnswerverifiedShow Answer

If a drug has high affinity and high efficacy, what effect does it have on the postsynaptic neuron?

Correct AnswerverifiedShow Answer

Which of the following is TRUE about the spontaneous firing rates of neurons?

Correct AnswerverifiedShow Answer

Neurotransmitter is to ____ as cyclic AMP is to ____.

Correct AnswerverifiedShow Answer

In addition to influencing other neurons, ____ dilates the nearby blood vessels, thereby increasing blood flow to that area of the brain.

Correct AnswerverifiedShow Answer

Describe the main properties of neuropeptides (neuromodulators).

Correct AnswerverifiedShow Answer

What is the synaptic cleft?

Correct AnswerverifiedShow Answer

Correct Answer
verified
Synthesis, storage, ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Depolarization is to as hyperpolarization is to .

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Neurotransmitter is to as cyclic AMP is to .

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified