Question 1

Match the glial cell with its function.
-Astrocytes

Accepted Answer

A)  Influence function of blood-brain barrier
B)  Macrophages in CNS
C)  Produce cerebrospinal fluid
D)  Form myelin sheath around axons in CNS
E)  Form myelin sheath around part of the axon in the PNSF) A) and C)
G) A) and B)

Question 2

Match the following concerning concentration differences across the plasma membrane.
-K+

Accepted Answer

A)  Concentration of K+
B)  Concentration of Na+ and Cl−
C)  Negatively charged proteins
D)  Sodium-potassium pump
E)  Plasma membrane is more permeable to this ion because of leak ion channelsF) None of the above
G) A) and B)

Question 3

Monamine oxidase inhibitors (MAO inhibitors)

Accepted Answer

A)   prevent synaptic transmission.
B)   enhance the breakdown of norepinephrine.
C)   enhance the binding of norepinephrine to its receptors.
D)   prevent the release of norepinephrine by the presynaptic terminal.
E)   have no effect on the action of norepinephrine.F) A) and D)
G) A) and E)

Question 4

Which of these does not contribute to the cessation of the signal in a synaptic transmission?

Accepted Answer

A)   Synaptic vesicles secrete neurotransmitter by exocytosis.
B)   Neurotransmitter escapes from the synapse into the nearby extracellular fluid.
C)   Neurotransmitters are no longer released.
D)   The axon terminal reabsorbs some neurotransmitters by endocytosis.
E)   Enzymes in the postsynaptic cell break down some neurotransmitters.F) C) and D)
G) All of the above

Question 5

Rapid removal or destruction of neurotransmitter in the synaptic cleft

Accepted Answer

A)   may affect the ability of the postsynaptic membrane to generate action potentials.
B)   generates local potentials in the presynaptic terminal.
C)   is necessary for synaptic transmission.
D)   may lead to action potentials.
E)   may stop exocytosis.F) B) and D)
G) A) and B)

Question 6

-The figure is a process figure of the chemical synapse. What does "E" represent?
A) Postsynaptic membrane
B) Synaptic cleft
C) Synaptic vesicle
D) Voltage-gated Ca2+ channel
E) Presynaptic terminal

Accepted Answer

Question 7

Enkephalins produce presynaptic inhibition in neurons transmitting pain signals. Increased levels of enkephalins will

Accepted Answer

A)   increase awareness of pain.
B)   decrease awareness of pain.
C)   increase amount of pain.
D)   decrease amount of pain.
E)   have no effect on awareness or amount of pain.F) C) and D)
G) A) and E)

Question 8

-The figure illustrates changes in the membrane potential during an action potential. What does "C" represent?
A) Repolarization
B) Depolarization
C) Local potential
D) Threshold
E) Afterpotential

Accepted Answer

The answer of 
-The figure illustrates changes in the membrane...

Question 9

Which neurotransmitter is released at neuromuscular junctions?

Accepted Answer

A)   Serotonin
B)   Acetylcholine
C)   Dopamine
D)   GlutamateE) A) and D)
F) None of the above

Question 10

A change in the resting membrane potential has the following characteristics: non-propagated, graded, can summate. This type of change can

Accepted Answer

A)   be a local potential.
B)   be an action potential.
C)   be a consequence of an increase in the permeability to Na+.
D)   result in repolarization.
E)   be a local potential and a consequence of an increase in the permeability to Na+.F) A) and B)
G) A) and E)

Question 11

What type of neuroglial cells provide support and nutrition to sensory ganglia in the PNS?

Accepted Answer

A)   Schwann cells
B)   Microglia
C)   Ependymal cells
D)   Satellite cellsE) A) and C)
F) None of the above

Question 12

Cell bodies of the peripheral nervous system are located in

Accepted Answer

A)   ganglia.
B)   Schwann cells.
C)   the motor division.
D)   the sensory division.
E)   nerves.F) A) and C)
G) B) and C)

Question 13

Match the glial cell with its function.
-Schwann cell

Accepted Answer

A)  Influence function of blood-brain barrier
B)  Macrophages in CNS
C)  Produce cerebrospinal fluid
D)  Form myelin sheath around axons in CNS
E)  Form myelin sheath around part of the axon in the PNSF) B) and E)
G) A) and E)

Question 14

Match the glial cell with its function.
-Ependymal cells

Accepted Answer

A)  Influence function of blood-brain barrier
B)  Macrophages in CNS
C)  Produce cerebrospinal fluid
D)  Form myelin sheath around axons in CNS
E)  Form myelin sheath around part of the axon in the PNSF) A) and D)
G) B) and E)

Question 15

The nervous system has two subdivisions-the central nervous system and the ________ nervous system.

Accepted Answer

The answer of The nervous system has two subdivisions-the central...

Question 16

The opening of more and more Na+ channels during depolarization

Accepted Answer

A)   is the result of the sodium-potassium exchange pump.
B)   is an example of a positive feedback cycle.
C)   is possible only if K+ channels remain closed.
D)   is the cause of the afterpotential.
E)   is an example of a negative feedback cycle.F) A) and E)
G) B) and C)

Question 17

Which of the following statements concerning resting membrane potential is true?

Accepted Answer

A)   The resting plasma membrane is more permeable to Na+ than K+.
B)   The resting membrane potential never reaches an equilibrium point.
C)   The resting membrane potential is proportional to the tendency for K+ to diffuse out of the cell.
D)   Negatively charged Cl− ions are attracted by negative charges in the cell.
E)   The purpose of the sodium-potassium pump is to create an equilibrium of ion concentrations.F) C) and D)
G) A) and B)

Question 18

When a neuron releases a neuromodulator that ________ the release of neurotransmitters from another neuron, this is called presynaptic facilitation.

Accepted Answer

A)   increases
B)   decreasesC) A) and B)
D) undefined

Question 19

Neurons that have a single axon and a single dendrite are ________.

Accepted Answer

A)   tripolar
B)   bipolar
C)   multipolar
D)   pseudo-unipolarE) A) and D)
F) None of the above

Question 20

Protein synthesis in neurons occurs in ________.

Accepted Answer

A)   axons
B)   dendrites
C)   cell bodies or soma
D)   presynaptic terminals
E)   nodes of RanvierF) A) and D)
G) B) and D)

Exam 11: Functional Organization of Nervous Tissue

A change in the resting membrane potential has the following characteristics: non-propagated, graded, can summate. This type of change can

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Match the following concerning concentration differences across the plasma membrane. -K+

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The nervous system has two subdivisions-the central nervous system and the ________ nervous system.

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The opening of more and more Na+ channels during depolarization

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Match the glial cell with its function. -Astrocytes

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Cell bodies of the peripheral nervous system are located in

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Enkephalins produce presynaptic inhibition in neurons transmitting pain signals. Increased levels of enkephalins will

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When a neuron releases a neuromodulator that ________ the release of neurotransmitters from another neuron, this is called presynaptic facilitation.

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Rapid removal or destruction of neurotransmitter in the synaptic cleft

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Which of the following statements concerning resting membrane potential is true?

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Which neurotransmitter is released at neuromuscular junctions?

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Protein synthesis in neurons occurs in ________.

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Monamine oxidase inhibitors (MAO inhibitors)

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What type of neuroglial cells provide support and nutrition to sensory ganglia in the PNS?

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Match the glial cell with its function. -Ependymal cells

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Match the glial cell with its function. -Schwann cell

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-The figure is a process figure of the chemical synapse. What does "E" represent? A) Postsynaptic membrane B) Synaptic cleft C) Synaptic vesicle D) Voltage-gated Ca2+ channel E) Presynaptic terminal

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Neurons that have a single axon and a single dendrite are ________.

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Which of these does not contribute to the cessation of the signal in a synaptic transmission?

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-The figure illustrates changes in the membrane potential during an action potential. What does "C" represent? A) Repolarization B) Depolarization C) Local potential D) Threshold E) Afterpotential

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Match the following concerning concentration differences across the plasma membrane. -K⁺

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The opening of more and more Na⁺ channels during depolarization

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-The figure is a process figure of the chemical synapse. What does "E" represent? A) Postsynaptic membrane B) Synaptic cleft C) Synaptic vesicle D) Voltage-gated Ca²⁺ channel E) Presynaptic terminal

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