CHAPTER 11 ANATOMY AND PHYSIOLOGY TEST
Receptors are parts of the nervous system that allow it to
collect information
The nervous system controls the activity of muscles and glands. Muscles and glands can generate changes and are therefore called
effectors
Nerves and ganglia are structures...
Receptors are parts of the nervous system that allow it to
collect information
The nervous system controls the activity of muscles and glands. Muscles and
glands can generate changes and are therefore called
effectors
Nerves and ganglia are structures found in the
peripheral nervous system
Which is not a general function of the nervous system?
transporting materials throughout the body
True or false: The spinal cord is part of the central nervous system
true
Which is not a function of the motor division of the nervous system?
transmits impulses from the viscera
The portion of the nervous system that conducts impulses from the skin, joints,
skeletal muscles, and special senses in the
somatic sensory
The portion of the nervous system that has voluntary control over skeletal
muscles is the
somatic motor
A neuron conducting an impulse from the stomach wall to the CNS would be
classified a ______________ neuron.
visceral sensory
Which is not a characteristic of neurons?
high mitotic rate
Conductive activity in a neuron generally causes it to secrete
a specific neurotransmitter that either excites or inhibits its target
Which statement is consistent with the current understanding of neural tissue?
most neurons formed in fetal development last a lifetime, but some brain regions in
adults can generate new neurons
Which part of the neuron contains the nucleus?
soma
Where are synaptic knobs located?
at the tips of telodendria
The cytoplasm within a cell body of a neuron is called the
perikaryon
Electrical signals are conducted toward the cell body of a neuron by its
dendrites
Based on structure, the most common type of a neuron is the
multipolar
Based on function, the vast majority of neurons are
interneurons
The neurons that are responsible for integrating information by retrieving,
processing, storing, and "deciding" how the body responds to stimuli are
, interneurons
Which functional class of neurons lies entirely within the central nervous
system?
interneurons
A bipolar neuron has
one axon and one dendrite extending from the cell body
True or false: Typically, a multipolar neuron has many dendrites and one axon
extending from the cell body.
true
In a mixed nerve...
some axons transmit sensory information and others transmit motor information
Most commonly, a synapse is made between a
presynaptic neuron's axon and a postsynaptic neuron's dendrite
When transmission occurs at a synapse, neurotransmitter is released
the presynaptic neuron's synaptic knob into the synaptic cleft
Glial cells differ from neurons in that they
are smaller and capable of mitosis
True or false: The nervous system contains more neurons than glial cells.
false
True or false: Glial cells help maintain the structure of synapses and they can
modify neural transmission.
true
The glial cell that helps to circulate cerebrospinal fluid is the
ependymal cell
The glial cell that myelinates and insulates axons within the CNS is the
oligodendrocyte
The glial cell that helps to form the blood-brain barrier is the
astrocyte
The glial cell that myelinates and insulates axons in the peripheral nervous
system is the
neurolemmocyte
The glial cell that defends the body against pathogens is the
microglial cell
The glial cell that protects neuron cell bodies located within ganglia is the
satellite cell
The glial cell with the responsibility of occupying the space left by
astrocyte
The glial cell that provides structural support and organization to the CNS is the
astrocyte
The glial cell with perivascular feet that wrap around capillaries in the CNS is the
astrocyte
What do all glial cells have in common?
They assist neurons in their respective functions.
The glossy-white appearance of most axons is due to
the high lipid content of the myelin sheath
The function of myelin is to
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