Question 1

The monoamine that has functions related to sleep,appetite,cognition,and mood is

Accepted Answer

A)  dopamine.
B)  serotonin.
C)  norepinephrine.
D)  acetylcholine.
E)  epinephrine.F) A) and E)
G) A) and D)

Question 2

The type of neuronal circuit that ensures that we continue to breathe while asleep is a _____________ circuit.

Accepted Answer

A)  converging
B)  diverging
C)  reverberating
D)  parallel-after-discharge
E)  None of the choices is correct.F) C) and D)
G) B) and E)

Question 3

Which is not characteristic of neurons

Accepted Answer

A)  High mitotic rate
B)  High metabolic rate
C)  Require continuous supplies of glucose and oxygen
D)  Extreme longevity
E)  No exceptions;all of these are characteristic of neurons.F) A) and E)
G) B) and E)

Question 4

A depolarization is when the inside of a neuron becomes _______________ the resting membrane potential.

Accepted Answer

A)  more negative than
B)  less negative than
C)  closer toD) None of the above
E) B) and C)

Question 5

Electrical synapses involve coupling of neurons by

Accepted Answer

A)  synaptic clefts.
B)  desmosomes.
C)  gap junctions.
D)  satellite cells.E) B) and C)
F) All of the above

Question 6

Arrival of an action potential at the synaptic knob results in

Accepted Answer

A)  opening of voltage-gated calcium channels and diffusion of calcium into the synaptic knob.
B)  opening of voltage-gated calcium channels and diffusion of calcium out of the synaptic knob to the interstitial fluid.
C)  closure of voltage-gated calcium channels in the synaptic knob membrane.
D)  opening of chemically gated calcium channels and diffusion of calcium into the synaptic knob.
E)  opening of chemically gated calcium channels and diffusion of calcium out of the synaptic knob to the interstitial fluid.F) B) and D)
G) C) and E) A

Question 7

If there were no sodium leak channels,the resting membrane potential of a neuron would be

Accepted Answer

A)  more negative.
B)  more positive.
C)  the same.
D)  0 mV.E) B) and C)
F) All of the above A

Question 8

Nerves and ganglia are structures found in the

Accepted Answer

A)  central nervous system.
B)  peripheral nervous system.
C)  central and peripheral nervous systems.D) A) and B)
E) A) and C)

Question 9

Which choice correctly orders the connective tissue wrappings of a nerve,beginning at the outermost layer

Accepted Answer

A)  Perineurium  →\rarr→ epineurium →\rarr→ endoneurium
B)  Perineurium  →\rarr→ endoneurium →\rarr→ epineurium
C)  Epineurium  →\rarr→ perineurium →\rarr→ endoneurium
D)  Epineurium  →\rarr→ endoneurium →\rarr→ perineurium
E)  Endoneurium  →\rarr→ perineurium →\rarr→ epineurium F) B) and D)
G) B) and C)

Question 10

Negatively charged protein molecules are more prevalent within a neuron's cytosol than in the interstitial fluid.

Accepted Answer

A) True 
 B)False  True

Question 11

The glial cell that myelinates and insulates axons in the peripheral nervous system is the

Accepted Answer

A)  astrocyte.
B)  ependymal cell.
C)  neurolemmocyte.
D)  microglial cell.
E)  oligodendrocyte.F) B) and D)
G) A) and B)

Question 12

Imagine a genetic mutation that resulted in a malfunctioning inactivation gate in a voltage-gated sodium channel.The defective gate wouldn't always open and close when it should.What functional problems would this cause for the neurons

Accepted Answer

Neurons' axons would not fire action pot...

Question 13

Catecholamines are a subtype of __________ neurotransmitter.

Accepted Answer

A)  acetylcholine
B)  neuropeptide
C)  monoamine
D)  amino acid
E)  soluble gasF) B) and D)
G) All of the above

Question 14

The type of neuronal circuit in which several neurons process the same information at one time is a _____________ circuit.

Accepted Answer

A)  converging
B)  diverging
C)  reverberating
D)  parallel-after-discharge
E)  None of the choices is correct.F) All of the above
G) A) and E)

Question 15

The slowest category of nerve fibers are the

Accepted Answer

A)  A fibers,and they conduct impulses at 10 meters per second.
B)  C fibers,and they conduct impulses at 1 meter per second.
C)  D fibers,and they conduct impulses at 0.1 meter per second.
D)  C fibers,and they conduct impulses at 100 meters per second.
E)  D fibers,and they conduct impulses at 0.01 meter per second.F) C) and E)
G) A) and B)

Question 16

In a myelinated axon,the greatest concentration of voltage-gated ion channels is in the

Accepted Answer

A)  myelinated regions.
B)  neurofibril nodes.C) A) and B)
D) undefined

Question 17

Which is not a function of the motor division of the nervous system

Accepted Answer

A)  Conducts impulses from the CNS
B)  Transmits impulses to muscles and glands
C)  Transmits impulses from the viscera
D)  Voluntary control of skeletal muscle
E)  Involuntary control of the heartF) C) and E)
G) B) and D)

Question 18

The glial cell that provides structural support and organization to the CNS is the

Accepted Answer

A)  astrocyte.
B)  ependymal cell.
C)  neurolemmocyte.
D)  microglial cell.
E)  oligodendrocyte.F) A) and E)
G) C) and D)

Question 19

The most crucial factor determining the resting potential of a neuron is the diffusion of

Accepted Answer

A)  potassium out of the cell through leak channels.
B)  potassium into the cell through gated channels.
C)  sodium out of the cell through leak channels.
D)  sodium into the cell through gated channels.E) B) and C)
F) None of the above

Question 20

A scientist observes a particular nerve fiber that is among the fastest at conducting action potentials in the body.Which of the following best describes its likely structure

Accepted Answer

A)  Large diameter and myelinated
B)  Large diameter and unmyelinated
C)  Small diameter and myelinated
D)  Small diameter and unmyelinatedE) B) and D)
F) B) and C)

Exam 12: Nervous System: Nervous Tissue

The monoamine that has functions related to sleep,appetite,cognition,and mood is

Correct AnswerverifiedShow Answer

The type of neuronal circuit that ensures that we continue to breathe while asleep is a _____________ circuit.

Correct AnswerverifiedShow Answer

Which is not characteristic of neurons

Correct AnswerverifiedShow Answer

A depolarization is when the inside of a neuron becomes _______________ the resting membrane potential.

Correct AnswerverifiedShow Answer

Electrical synapses involve coupling of neurons by

Correct AnswerverifiedShow Answer

Arrival of an action potential at the synaptic knob results in

Correct AnswerverifiedA

If there were no sodium leak channels,the resting membrane potential of a neuron would be

Correct AnswerverifiedA

Nerves and ganglia are structures found in the

Correct AnswerverifiedShow Answer

Which choice correctly orders the connective tissue wrappings of a nerve,beginning at the outermost layer

Correct AnswerverifiedShow Answer

Negatively charged protein molecules are more prevalent within a neuron's cytosol than in the interstitial fluid.

Correct AnswerverifiedTrue

The glial cell that myelinates and insulates axons in the peripheral nervous system is the

Correct AnswerverifiedShow Answer

Imagine a genetic mutation that resulted in a malfunctioning inactivation gate in a voltage-gated sodium channel.The defective gate wouldn't always open and close when it should.What functional problems would this cause for the neurons

Correct AnswerverifiedNeurons' axons would not fire action pot...View AnswerShow Answer

Catecholamines are a subtype of __________ neurotransmitter.

Correct AnswerverifiedShow Answer

The type of neuronal circuit in which several neurons process the same information at one time is a _____________ circuit.

Correct AnswerverifiedShow Answer

The slowest category of nerve fibers are the

Correct AnswerverifiedShow Answer

In a myelinated axon,the greatest concentration of voltage-gated ion channels is in the

Correct AnswerverifiedShow Answer

Which is not a function of the motor division of the nervous system

Correct AnswerverifiedShow Answer

The glial cell that provides structural support and organization to the CNS is the

Correct AnswerverifiedShow Answer

The most crucial factor determining the resting potential of a neuron is the diffusion of

Correct AnswerverifiedShow Answer

A scientist observes a particular nerve fiber that is among the fastest at conducting action potentials in the body.Which of the following best describes its likely structure

Correct AnswerverifiedShow Answer

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Neurons' axons would not fire action pot...
View Answer

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