Question 1

Voltage-gated Na+ channels are sensitive to changes in the extracellular concentration of ________.

Accepted Answer

A)   K+
B)   proteins
C)   Na+
D)   Cl−
E)   Ca2+F) A) and E)
G) A) and D)

Question 2

Local hyperpolarization in a synapse is called a/an ________.

Accepted Answer

A)   excitatory postsynaptic potential
B)   resting membrane potential
C)   inhibitory postsynaptic potential
D)   gap junction potential
E)   action potentialF) A) and C)
G) A) and B)

Question 3

Synapses in which gap junctions allow ions to diffuse quickly from cell to cell are called ________ synapses.

Accepted Answer

A)   electrical
B)   chemicalC) A) and B)
D) undefined

Question 4

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) A) and B)
G) B) and D)

Question 5

Clusters of gray matter deep within the brain are called ________.

Accepted Answer

A)   cortices
B)   nerves
C)   ganglia
D)   nucleiE) A) and B)
F) All of the above

Question 6

Which of the following is NOT a glial cell of the CNS?

Accepted Answer

A)   Ependymal cells
B)   Satellite cells
C)   Oligodendrocytes
D)   AstrocytesE) A) and B)
F) None of the above

Question 7

Which of the following is mismatched?

Accepted Answer

A)   Central nervous system - brain
B)   Autonomic nervous system - sympathetic and parasympathetic divisions
C)   Peripheral nervous system - spinal nerves
D)   Somatic nervous system - sensory division of PNS
E)   Peripheral nervous system - sensory and motor divisionsF) A) and D)
G) None of the above

Question 8

Most pseudo-unipolar neurons are ________ neurons.

Accepted Answer

The answer of Most pseudo-unipolar neurons are ________ neurons....

Question 9

The nervous system

Accepted Answer

A)   monitors internal and external stimuli.
B)   transmits information in the form of action potentials.
C)   interprets or assesses information.
D)   maintains homeostasis.
E)   All of the choices are correct.F) A) and E)
G) A) and C)

Question 10

-Identify structure "B" on the neuron.
A) Schwann cell
B) Node of Ranvier
C) Neuron cell body (soma)
D) Dendrites
E) Axon

Accepted Answer

The answer of 
-Identify structure "B" on the neuron.
A) Schwann...

Question 11

The absolute refractory period assures

Accepted Answer

A)   prolonged depolarization during the action potential.
B)   completion of repolarization before another action potential.
C)   that no after-potential occurs.
D)   reversal of the direction of propagation of the action potential.
E)   that the stimulus is strong enough to elicit a response.F) B) and D)
G) B) and C)

Question 12

When a neurotransmitter binds to its receptor and increases the permeability of the postsynaptic membrane to Na+,

Accepted Answer

A)   the membrane will be hyperpolarized.
B)   more Cl− will also diffuse into the cell.
C)   an excitatory postsynaptic potential (EPSP)  will result.
D)   the membrane will become impermeable to K+.
E)   Na+ diffuses out of the cell.F) A) and B)
G) All of the above

Question 13

The autonomic nervous system

Accepted Answer

A)   stimulates skeletal muscle contractions.
B)   has two sets of neurons in a series.
C)   is involved in problem solving.
D)   is under voluntary control.
E)   does not include the central nervous system.F) A) and B)
G) B) and C)

Question 14

The nervous system and the endocrine system are the major control systems of the body.

Accepted Answer

A) True 
 B)False

Question 15

Action potentials are conducted more rapidly when transmission is

Accepted Answer

A)   from node to node on a myelinated axon.
B)   on a small diameter axon.
C)   on an unmyelinated axon.
D)   from internode to internode.
E)   from internode to node on a myelinated axon.F) All of the above
G) D) and E)

Question 16

The central nervous system includes the ________.

Accepted Answer

A)   ganglia
B)   spinal cord
C)   spinal nerves
D)   cranial nerves
E)   sensory receptorsF) A) and D)
G) A) and C)

Question 17

Gap junctions are functionally ________ synapses.

Accepted Answer

A)   chemical
B)   electrical
C)   potential
D)   intracellular
E)   neuromuscularF) A) and B)
G) A) and C)

Question 18

Groups of related nerve cell bodies located outside of the central nervous system are called ________.

Accepted Answer

A)   ganglia
B)   plexus
C)   tracts
D)   nervesE) B) and C)
F) A) and D)

Question 19

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) A) and B)
G) B) and C)

Question 20

Receptor molecules

Accepted Answer

A)   are nonspecific.
B)   are always lipids.
C)   attach to the synaptic cleft.
D)   determine whether a neurotransmitter will be excitatory or inhibitory.
E)   are not attached to ligand-gated channels.F) C) and E)
G) B) and C)

Exam 11: Functional Organization of Nervous Tissue

The central nervous system includes the ________.

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The blood-brain barrier

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Which of the following is mismatched?

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The absolute refractory period assures

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Groups of related nerve cell bodies located outside of the central nervous system are called ________.

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Synapses in which gap junctions allow ions to diffuse quickly from cell to cell are called ________ synapses.

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The nervous system

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Which of the following is NOT a glial cell of the CNS?

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Gap junctions are functionally ________ synapses.

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-Identify structure "B" on the neuron. A) Schwann cell B) Node of Ranvier C) Neuron cell body (soma) D) Dendrites E) Axon

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Action potentials are conducted more rapidly when transmission is

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During the absolute refractory period, the cell

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The nervous system and the endocrine system are the major control systems of the body.

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Most pseudo-unipolar neurons are ________ neurons.

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Voltage-gated Na+ channels are sensitive to changes in the extracellular concentration of ________.

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Receptor molecules

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Clusters of gray matter deep within the brain are called ________.

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When a neurotransmitter binds to its receptor and increases the permeability of the postsynaptic membrane to Na+,

Correct AnswerverifiedShow Answer

The autonomic nervous system

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Local hyperpolarization in a synapse is called a/an ________.

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Voltage-gated Na⁺ channels are sensitive to changes in the extracellular concentration of ________.

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When a neurotransmitter binds to its receptor and increases the permeability of the postsynaptic membrane to Na⁺,

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