Question 1

One of the ways in which neurotransmitter is removed from the synaptic cleft is

Accepted Answer

A)  endocytosis by the postsynaptic cell.
B)  reuptake by the presynaptic cell.
C)  phagocytosis by a macrophage.
D)  dendritic lassos.E) B) and C)
F) A) and B)

Question 2

One main category of neurotransmitters is amino acids.

Accepted Answer

A) True 
 B)False

Question 3

Saltatory conduction of a nerve impulse occurs only along myelinated axons.

Accepted Answer

A) True 
 B)False

Question 4

Maintenance of appropriate ion concentrations (especially after nerve impulses that involved ion diffusion) is primarily the job of

Accepted Answer

A)  voltage-gated channels.
B)  sodium-potassium pumps.
C)  chemically gated channels.
D)  mechanically gated channels.E) C) and D)
F) B) and C)

Question 5

Which occurs first

Accepted Answer

A)  Absolute refractory period
B)  Relative refractory periodC) A) and B)
D) undefined

Question 6

Acetylcholine is a neurotransmitter frequently used in the autonomic nervous system.

Accepted Answer

A) True 
 B)False

Question 7

A sensory neuron detecting an intense stimulus will generate action potentials of greater strength as compared to a sensory neuron detecting a weak stimulus.All action potentials are the same strength.Signal strength is coded by varying action potential frequency.

Accepted Answer

A) True 
 B)False

Question 8

Chemically gated ion channels are mainly found in the ________ segment of a neuron.

Accepted Answer

A)  initial
B)  receptive
C)  conductive
D)  transmissiveE) None of the above
F) A) and B)

Question 9

The type of neuronal circuit in which several nerve impulses come together at a single postsynaptic neuron 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 E)
G) A) and C)

Question 10

Saltatory conduction occurs in

Accepted Answer

A)  myelinated axons,where action potentials occur only at neurofibril nodes.
B)  myelinated axons,where action potentials occur only under the myelin sheath.
C)  myelinated axons,where action potentials occur continuously down the entire axon.
D)  unmyelinated axons,where action potentials occur continuously down the entire axon.
E)  the axon terminal,where full-size action potentials occur at the hillock.F) A) and E)
G) A) and C)

Question 11

The glial cell that myelinates and insulates axons within the CNS is the

Accepted Answer

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

Question 12

In neurophysiology,the term "summation" refers to the addition of

Accepted Answer

A)  action potentials at the node of Ranvier.
B)  postsynaptic potentials at the initial segment.
C)  excitatory neurotransmitter molecules at a receptor.
D)  resting membrane potentials in a particular area of the brain.
E)  presynaptic hyperpolarizations.F) B) and D)
G) B) and E)

Question 13

Which is not a general function of the nervous system

Accepted Answer

A)  Transporting materials throughout the body
B)  Collecting information
C)  Processing and evaluating information
D)  Responding to information
E)  No exceptions;all are general functions of the nervous system.F) C) and D)
G) A) and C)

Question 14

A neuron conducting an impulse from the CNS to the detrusor muscle of the urinary bladder would be classified as a(n) __________ neuron.

Accepted Answer

A)  autonomic motor
B)  somatic sensory
C)  somatic motor
D)  visceral sensoryE) C) and D)
F) All of the above

Question 15

As an axon approaches the cell onto which it will terminate,it generally branches repeatedly into several

Accepted Answer

A)  teloaxons.
B)  dendrites.
C)  collateral axons.
D)  telodendria.
E)  neurolemmocytes.F) A) and B)
G) C) and E)

Question 16

A mixed nerve is one that contains both

Accepted Answer

A)  cranial and spinal nerve fibers.
B)  sensory and motor neurons.
C)  unipolar and bipolar neurons.
D)  an endoneurium and an epineurium.
E)  presynaptic and postsynaptic neurons.F) B) and E)
G) A) and C)

Question 17

Which division of the nervous system shows a greater capacity for regeneration

Accepted Answer

A)  CNS
B)  PNSC) A) and B)
D) undefined

Question 18

What type of circuit is used to maintain body posture while walking

Accepted Answer

A)  Converging
B)  Diverging
C)  Reverberating
D)  Parallel-after-discharge
E)  None of the choices is correct.F) A) and C)
G) A) and B)

Question 19

The axon hillock makes up the ________ segment of a neuron.

Accepted Answer

The answer of The axon hillock makes up the ________...

Question 20

Which of the following is false regarding acetylcholine

Accepted Answer

A)  It is rarely used in the body.
B)  It is the neurotransmitter used at the neuromuscular junction.
C)  It is stored and released by the presynaptic cell.
D)  It is synthesized from acetic acid and choline.E) A) and D)
F) C) and D)

Exam 12: Nervous System: Nervous Tissue

Saltatory conduction occurs in

Correct AnswerverifiedShow Answer

One main category of neurotransmitters is amino acids.

Correct AnswerverifiedShow Answer

A sensory neuron detecting an intense stimulus will generate action potentials of greater strength as compared to a sensory neuron detecting a weak stimulus.All action potentials are the same strength.Signal strength is coded by varying action potential frequency.

Correct AnswerverifiedShow Answer

The type of neuronal circuit in which several nerve impulses come together at a single postsynaptic neuron is a _____________ circuit.

Correct AnswerverifiedShow Answer

Chemically gated ion channels are mainly found in the ________ segment of a neuron.

Correct AnswerverifiedShow Answer

Which division of the nervous system shows a greater capacity for regeneration

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As an axon approaches the cell onto which it will terminate,it generally branches repeatedly into several

Correct AnswerverifiedShow Answer

Which occurs first

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The axon hillock makes up the ________ segment of a neuron.

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A neuron conducting an impulse from the CNS to the detrusor muscle of the urinary bladder would be classified as a(n) __________ neuron.

Correct AnswerverifiedShow Answer

The glial cell that myelinates and insulates axons within the CNS is the

Correct AnswerverifiedShow Answer

One of the ways in which neurotransmitter is removed from the synaptic cleft is

Correct AnswerverifiedShow Answer

Which of the following is false regarding acetylcholine

Correct AnswerverifiedShow Answer

In neurophysiology,the term "summation" refers to the addition of

Correct AnswerverifiedShow Answer

Saltatory conduction of a nerve impulse occurs only along myelinated axons.

Correct AnswerverifiedShow Answer

Which is not a general function of the nervous system

Correct AnswerverifiedShow Answer

Acetylcholine is a neurotransmitter frequently used in the autonomic nervous system.

Correct AnswerverifiedShow Answer

Maintenance of appropriate ion concentrations (especially after nerve impulses that involved ion diffusion) is primarily the job of

Correct AnswerverifiedShow Answer

What type of circuit is used to maintain body posture while walking

Correct AnswerverifiedShow Answer

A mixed nerve is one that contains both

Correct AnswerverifiedShow Answer

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