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Chapter
13
The Nervous
System: Neural
Tissue
PowerPoint® Lecture Slides
prepared by Agnes Yard and
Michael Yard
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings
Copyright © 2008 Pearson Education, Inc.,
publishing as Pearson Benjamin Cummings
Which subdivision of the nervous system includes all of
the neural tissue except for the brain and spinal cord?
a. somatic nervous system
b. peripheral nervous system
c. sympathetic division of autonomic nervous
system
d. autonomic nervous system
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings
Which of the following is the most common type of
neurons in the central nervous system and is
exemplified by all the motor neurons that control
skeletal muscle?
a. anaxonic neurons
b. multipolar neurons
c. pseudounipolar neurons
d. bipolar neurons
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings
Individual neurons or neuronal pools process
information simultaneously in which of the following
types of neural circuits?
a. parallel processing
b. serial processing
c. reverberation
d. convergence
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings
Which of the following is/are not characteristic of
ependymal cells?
a. They line the ventricles in the brain and the
central canal in the spinal cord.
b. They remove cell debris, wastes, and
pathogens by phagocytosis.
c. They assist in producing, circulating, and
monitoring cerebrospinal fluid.
d. b and c
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings
The ability of a plasmalemma to conduct electrical
impulses is known as:
a. action potential
b. threshold level
c. neuroeffection
d. excitability
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings
Which of the following component of the nervous
system controls skeletal muscle contractions?
a. somatic nervous system
b. autonomic nervous system
c. sympathetic nervous system
d. parasympathetic nervous system
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings
Of the neuron’s total surface area, 80–90% is
represented by its:
a. dendrites
b. soma
c. dendritic spines
d. axon
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings
Demyelination is not associated with which of the
following conditions?
a. diphtheria
b. rabies
c. multiple sclerosis
d. Guillian-Barré Syndrome
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings
An anatomically distinct collection of sensory or motor
neuron cell bodies within the peripheral nervous system
is called a/an:
a. nerve
b. soma
c. nucleus
d. ganglia
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings
Which of the following most accurately describes the
neuroglia of the central nervous system?
a. The astrocytes are packed with neurofibrils that extend
across the breadth of the cell, forming a structural network
that supports the neurons of the brain and spinal cord.
b. The microglia appear early in embryonic development
through the division of endodermal stem cells.
c. Ependymal cells are cuboidal to columnar in form and have
slender processes that branch extensively and make direct
contact with glial cells.
d. Oligodendrocytes’ processes are slender and more
numerous compared to those of astrocytes; their processes
tie clusters of axons together and improve the functional
performance of neurons.
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings
A synapse between the synaptic terminal of one neuron
and the cell body of another is called:
a. axosomatic
b. axoaxonic
c. axodendritic
d. somatoaxonic
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings
Which of the following statements regarding Schwann
cells is/are true?
a. A Schwann cell can myelinate only about 10
μm down the length of a single axon.
b. Unmyelinated axons are enclosed by
Schwann cell processes.
c. A single Schwann cell may surround several
different unmyelinated axons.
d. b and c
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings
During neural regeneration in the peripheral nervous system, the
growing axon is most likely to arrive at its appropriate
destination if the following occurs:
a. The axon distal to the injury site deteriorates.
b. The damaged proximal and distal stumps
remain in contact after the injury.
c. The macrophages migrate into the injury site
to phagocytize the debris.
d. The damaged proximal and distal stumps
migrate away from each other.
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings
A group of neuron cell bodies in the central nervous
system which share a common function is known as
a/an:
a. soma
b. center
c. ganglion
d. neural cortex
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings
Which of the following types of neural circuits
describes the spread of information from one neuron to
several neurons?
a. convergence
b. reverberation
c. divergence
d. serial processing
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings
Which is true regarding nonvesicular synapses?
a. They involve the passage of a
neurotransmitter substance between cells.
b. They are also termed electrical synapses.
c. Their presynaptic and postsynaptic
membranes are tightly bound together.
d. b and c
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings
Histologically, neural tissue dominated by myelinated
axons is defined as:
a. gray matter
b. white matter
c. neuroglia
d. neural cortex
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings
Which of the following glial cells of the central nervous
system is responsible for controlling the interstitial
environment?
a. astrocytes
b. oligodendrocytes
c. microglia
d. ependymal cells
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings
Which type of neural circuit permits the variable
control of motor neurons by providing a mechanism for
their voluntary and involuntary control?
a. parallel processing
b. divergence
c. convergence
d. serial processing
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings
Which of the following axons would transmit an
impulse most quickly?
a. diameter of 20 μm and unmyelinated
b. diameter of 20 μm and myelinated
c. diameter of 2 μm and myelinated
d. diameter of 2 μm and unmyelinated
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings
Which of the following statements regarding
interoceptors is false?
a. They monitor the digestive, respiratory,
cardiovascular, urinary, and reproductive
systems.
b. They monitor the position and movement of
skeletal muscles and joints.
c. They provide sensations of deep pressure
and pain.
d. They provide the sensation of taste.
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings
A receptor in the nervous system may be which of the
following?
a. a dendrite
b. a specialized cell or cluster of cells
c. a complex sense organ
d. all of the above
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings
The cell bodies of sensory neurons and visceral motor
neurons within the peripheral nervous system are
found in which of the following structures?
a. tracts
b. columns
c. ganglia
d. pathways
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings
Which is false regarding vesicular synapses?
a. They are the most abundant type of
synapses and consist of several different
types.
b. They involve gap junctions that permit ion
flow between the cells.
c. There are receptor proteins on the
postsynaptic membrane to which
neurotransmitters bind.
d. None of the above is false.
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings
Which of the following are the largest and most
numerous glial cells of the central nervous system?
a. astrocytes
b. oligodendrocytes
c. microglia
d. ependymal cells
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings