Question 1

The equilibrium potential for potassium ion occurs at approximately

Accepted Answer

A)  -90 mV.
B)  -70 mV.
C)  +66 mV.
D)  0 mV.
E)  +30 mV.F) B) and E)
G) A) and C)

Question 2

Cholinergic synapses release the neurotransmitter

Accepted Answer

A)  norepinephrine.
B)  adrenalin.
C)  serotonin.
D)  acetylcholine.
E)  GABA.F) All of the above
G) A) and E)

Question 3

After a stroke,what type of glial cell accumulates within the affected brain region?

Accepted Answer

A)  Schwann cells
B)  satellite cells
C)  oligodendrocytes
D)  microglia
E)  ependymal cellsF) C) and D)
G) B) and E)

Question 4

Glial cells that surround the neurons in ganglia are

Accepted Answer

A)  astrocytes.
B)  satellite cells.
C)  oligodendrocytes.
D)  microglia.
E)  ependymal cells.F) None of the above
G) A) and B)

Question 5

Which of the following is not a recognized structural classification for neurons?

Accepted Answer

A)  anaxonic
B)  bipolar
C)  multipolar
D)  pseudopolar
E)  unipolarF) B) and C)
G) A) and E)

Question 6

The neurilemma of axons in the peripheral nervous system is formed by

Accepted Answer

A)  astrocytes.
B)  satellite cells.
C)  oligodendrocytes.
D)  microglia.
E)  Schwann cells.F) C) and D)
G) All of the above

Question 7

Which of the following is not a possible drug effect on synaptic function?

Accepted Answer

A)  interfere with neurotransmitter synthesis
B)  interfere with neurotransmitter reuptake
C)  prevent neurotransmitter inactivation
D)  block neurotransmitter binding to receptors
E)  change the type of receptor found in the postsynaptic membraneF) A) and E)
G) B) and D)

Question 8

The separation of positive and negative charges across the membrane creates a ________ difference,or voltage.

Accepted Answer

A)  thermodynamic
B)  permeability
C)  dialysis
D)  electrochemical
E)  potentialF) B) and D)
G) B) and C)

Question 9

The cytoplasm that surrounds the nucleus of a neuron is called the

Accepted Answer

A)  protoplasm.
B)  nucleoplasm.
C)  sarcoplasm.
D)  neuroplasm.
E)  perikaryon.F) B) and D)
G) B) and E)

Question 10

If the sodium-potassium pumps in the plasma membrane fail to function,all of the following occur except

Accepted Answer

A)  the intracellular concentration of potassium ions will increase.
B)  the neuron will slowly depolarize.
C)  the membrane will slowly lose its capacity to generate action potentials.
D)  the inside of the membrane will have a resting potential that is more positive than normal.
E)  the intracellular concentration of sodium ions will increase.F) None of the above
G) A) and B)

Question 11

Clusters of RER and free ribosomes in neurons are called

Accepted Answer

A)  neurofilaments.
B)  neurofibrils.
C)  perikaryon.
D)  Nissl bodies.
E)  microglia.F) B) and E)
G) B) and D)

Question 12

The basic functional unit of the nervous system is the

Accepted Answer

A)  neuron.
B)  axon.
C)  nerve.
D)  glial cell.
E)  receptor.F) None of the above
G) C) and E)

Question 13

Voltage-gated channels are present

Accepted Answer

A)  at the motor end plate.
B)  on the surface of dendrites.
C)  in the membrane that covers axons.
D)  on the soma of neurons.
E)  along the perikaryon of neurons.F) B) and D)
G) A) and D)

Question 14

________ provide information about the external environment.

Accepted Answer

A)  Spinal nerves
B)  Anaxonic neurons
C)  Internoceptors
D)  Exteroceptors
E)  ProprioceptorsF) A) and C)
G) C) and D)

Question 15

The ion that triggers the release of acetylcholine into the synaptic cleft is

Accepted Answer

A)  sodium.
B)  potassium.
C)  calcium.
D)  chloride.
E)  magnesium.F) A) and B)
G) None of the above

Question 16

The axon is connected to the soma at the

Accepted Answer

A)  telodendria.
B)  synaptic terminal.
C)  collaterals.
D)  axon hillock.
E)  synapse.F) B) and E)
G) A) and B)

Question 17

During repolarization of a neuron

Accepted Answer

A)  sodium ions move out of the cell.
B)  potassium ions move out of the cell.
C)  potassium ions move into the cell.
D)  both sodium and potassium ions move into the cell.
E)  sodium ions move into the cell.F) A) and E)
G) A) and D)

Question 18

At a(n) ________ synapse,a neurotransmitter is released to stimulate the postsynaptic membrane.

Accepted Answer

A)  electrical
B)  cell
C)  chemical
D)  osmotic
E)  gapF) A) and D)
G) C) and D)

Question 19

A change in the conditions in the synaptic terminal can influence the soma as a result of ________ transport.

Accepted Answer

A)  anterograde
B)  retrograde
C)  osmotic
D)  active
E)  passiveF) A) and E)
G) A) and B)

Question 20

The efferent division of the peripheral nervous system innervates ________ cells.

Accepted Answer

A)  skeletal muscle
B)  smooth muscle
C)  heart muscle
D)  glandular
E)  All of the answers are correct.F) A) and E)
G) A) and D)

Exam 12: Neural Tissue

________ provide information about the external environment.

Correct AnswerverifiedShow Answer

Glial cells that surround the neurons in ganglia are

Correct AnswerverifiedShow Answer

If the sodium-potassium pumps in the plasma membrane fail to function,all of the following occur except

Correct AnswerverifiedShow Answer

After a stroke,what type of glial cell accumulates within the affected brain region?

Correct AnswerverifiedShow Answer

The basic functional unit of the nervous system is the

Correct AnswerverifiedShow Answer

The equilibrium potential for potassium ion occurs at approximately

Correct AnswerverifiedShow Answer

The neurilemma of axons in the peripheral nervous system is formed by

Correct AnswerverifiedShow Answer

Cholinergic synapses release the neurotransmitter

Correct AnswerverifiedShow Answer

Which of the following is not a possible drug effect on synaptic function?

Correct AnswerverifiedShow Answer

Clusters of RER and free ribosomes in neurons are called

Correct AnswerverifiedShow Answer

A change in the conditions in the synaptic terminal can influence the soma as a result of ________ transport.

Correct AnswerverifiedShow Answer

The separation of positive and negative charges across the membrane creates a ________ difference,or voltage.

Correct AnswerverifiedShow Answer

At a(n) ________ synapse,a neurotransmitter is released to stimulate the postsynaptic membrane.

Correct AnswerverifiedShow Answer

The axon is connected to the soma at the

Correct AnswerverifiedShow Answer

During repolarization of a neuron

Correct AnswerverifiedShow Answer

Voltage-gated channels are present

Correct AnswerverifiedShow Answer

The cytoplasm that surrounds the nucleus of a neuron is called the

Correct AnswerverifiedShow Answer

The ion that triggers the release of acetylcholine into the synaptic cleft is

Correct AnswerverifiedShow Answer

Which of the following is not a recognized structural classification for neurons?

Correct AnswerverifiedShow Answer

The efferent division of the peripheral nervous system innervates ________ cells.

Correct AnswerverifiedShow Answer

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