Question 1

The gray matter of the cerebrum is composed of neuron cell bodies and makes up both the ______ and the ______.

Accepted Answer

A)   cortex ; deep cerebral nuclei
B)   cerebral tracts ; cortex
C)   cortex ; white matterD) A) and C)
E) All of the above

Question 2

____________ are neuroglia cells that are macrophages.
microglia

Accepted Answer

The answer of ____________ are neuroglia cells that are macrophages.
microglia...

Question 3

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

Accepted Answer

A)   decreases
B)   increasesC) A) and B)
D) undefined

Question 4

The absolute refractory period ends when

Accepted Answer

A)   inactivation gates of voltage-gated Na+ ion channels reopen.
B)   activation gates of voltage-gates Na+ ion channels reopen.
C)   the sodium-potassium exchange pump stops.
D)   voltage-gated K+ channels open.
E)   None of these choices is correct.F) B) and E)
G) D) and E)

Question 5

When two action potentials arrive simultaneously at two different presynaptic terminals that synapse with the same postsynaptic neuron,

Accepted Answer

A)   the direction of the action potential is reversed.
B)   temporal summation occurs.
C)   spatial summation occurs.
D)   hyperpolarization occurs.
E)   threshold is never reached.F) B) and C)
G) B) and E)

Question 6

The nervous system has two subdivisions - the central nervous system and the ____________ nervous system.
peripheral

Accepted Answer

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

Question 7

The blood-brain barrier

Accepted Answer

A)   permits passage of foreign substances from the blood to the neurons.
B)   prohibits the transport of amino acids and glucose to the neurons.
C)   prohibits the removal of waste materials from the neurons.
D)   protects neurons from toxic substances in the blood.
E)   does not prevent fluctuations in the composition of the blood from affecting the functions of the brain.F) B) and E)
G) None of the above

Question 8

A series of local potentials causes the membrane potential to move to -80 mV. Predict the result.

Accepted Answer

A)   threshold is reached
B)   depolarization occurs
C)   the neuron is hyperpolarized
D)   information of frequency is needed to predict the result
E)   the neuron releases neurotransmitter in responseF) A) and D)
G) A) and E)

Question 9

What is the only neurotransmitter released at the neuromuscular junction?

Accepted Answer

A)   serotonin
B)   acetylcholine
C)   dopamine
D)   glutamateE) A) and D)
F) A) and C)

Question 10

Match the following concerning concentration differences across the plasma membrane.
-higher inside cell

Accepted Answer

A)  concentration of potassium
B)  concentration of sodium and chloride
C)  negatively charged proteins
D)  sodium/potassium pump
E)  plasma membrane is more permeable to this ion because of leak ion channelsF) B) and C)
G) A) and B)

Question 11

Identify structure "D" on the neuron.

Accepted Answer

A)   Schwann cell
B)   Node of Ranvier
C)   neuron cell body (soma) 
D)   dendrites
E)   axonF) B) and E)
G) All of the above

Question 12

Neurotransmitters are released from the

Accepted Answer

A)   epineurium.
B)   synaptic cleft.
C)   presynaptic terminal.
D)   postsynaptic membrane.
E)   calcium channels.F) A) and D)
G) A) and C)

Question 13

The central nervous system includes the

Accepted Answer

A)   ganglia.
B)   spinal cord.
C)   spinal nerves.
D)   cranial nerves.
E)   sensory receptors.F) All of the above
G) A) and B)

Question 14

During the absolute refractory period, the cell

Accepted Answer

A)   generates many local potentials.
B)   is insensitive to further stimulation.
C)   responds to even weak stimuli.
D)   reverses the direction of the action potential.
E)   is very sensitive.F) B) and D)
G) A) and B)

Question 15

Gray matter consists of bundles of myelinated axons.
FALSE

Accepted Answer

A) True 
 B)False

Question 16

Gap junctions are functional __________ synapses.

Accepted Answer

A)   chemical
B)   electrical
C)   potential
D)   intracellular
E)   neuromuscularF) B) and D)
G) None of the above

Question 17

Cerebrospinal fluid is produced by ____________ cells.
ependymal

Accepted Answer

The answer of Cerebrospinal fluid is produced by ____________ cells.
ependymal...

Question 18

Schwann cells differ from oligodendrocytes in which of the following ways?

Accepted Answer

A)   Schwann cells form myelin; oligodendrocytes do not.
B)   Oligodendrocytes are only found in the PNS; Schwann cells are only found in the CNS.
C)   Schwann cells form sheaths around several axons, while oligodendrocytes form sheaths around only one axon.
D)   Schwann cells form a myelin sheath around a portion of only one axon, while oligodendrocytes can surround portions of several axons.
E)   None of these choices are true differences.F) A) and E)
G) All of the above

Question 19

The figure is a process figure of the chemical synapse. What does "E" represent?

Accepted Answer

A)   postsynaptic membrane
B)   synaptic cleft
C)   synaptic vesicle
D)   voltage-gated calcium channel
E)   presynaptic terminalF) D) and E)
G) B) and E)

Question 20

The figure illustrates the Action Potential. What does "C" represent?

Accepted Answer

A)   repolarization
B)   depolarization
C)   local potential
D)   threshold
E)   afterpotentialF) D) and E)
G) B) and C)

Exam 11: Functional Organization of Nervous Tissue

The blood-brain barrier

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Gray matter consists of bundles of myelinated axons. FALSE

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A series of local potentials causes the membrane potential to move to -80 mV. Predict the result.

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The gray matter of the cerebrum is composed of neuron cell bodies and makes up both the ______ and the ______.

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The figure illustrates the Action Potential. What does "C" represent?

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Identify structure "D" on the neuron.

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The nervous system has two subdivisions - the central nervous system and the ____________ nervous system. peripheral

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Match the following concerning concentration differences across the plasma membrane. -higher inside cell

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Schwann cells differ from oligodendrocytes in which of the following ways?

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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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The figure is a process figure of the chemical synapse. What does "E" represent?

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When two action potentials arrive simultaneously at two different presynaptic terminals that synapse with the same postsynaptic neuron,

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During the absolute refractory period, the cell

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The central nervous system includes the

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Cerebrospinal fluid is produced by ____________ cells. ependymal

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The absolute refractory period ends when

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Neurotransmitters are released from the

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Gap junctions are functional __________ synapses.

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____________ are neuroglia cells that are macrophages. microglia

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What is the only neurotransmitter released at the neuromuscular junction?

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The gray matter of the cerebrum is composed of neuron cell bodies and makes up both the and the .

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