ACING BIOS 255 FINAL EXAM WITH AN A+ QUESTIONS AND
ANSWERS PLAYBOOK
The posterior root ganglion contains
cell bodies of sensory neurons
Which of the cells is particularly active in preserving the blood-brain barrier?
astrocytes
Which is not a feature of neurons?
mitotic
Afferent neurons carry ___ to the ___
sensory information, brain and spinal cord
Oligodendrocytes wrapping cellular processes around axons produce the
myelin sheath
Motor neurons are ____ and sensory neurons are ____.
efferent, afferent
Bipolar neurons are
found in the retina of the eye
Neuronal cell bodies found outside the central nervous system in groups are
called
ganglia.
The substance released at axonal endings to propagate a nervous impulse is
called a(n)
neurotransmitter
The point at which an impulse from one nerve cell is communicated to another
nerve cell is the
synapse
While skiing, Barb ran into a fence buried beneath the snow; she slammed to the
ground. For days afterward, she had intense back pain that radiated down her
lateral thigh. Her doctor said she had at least one herniated disc, which
compresessed nerves, causing her to feel pain. She is still able to walk, although
, she has no sensations from her L4-L5 dermatomes. What anatomical
characteristic of spinal nerves explains this?
The ruptured disc pressed upon the posterior, but not the anterior, root
Beboba has multiple sclerosis. She has trouble focusing her eyes and trips often
while walking to work. Demyelination of CNS neurons, caused by an autoimmune
disease, causes her symptoms. What cells in Beboba's CNS are most directly
affected?
Oligodendrocytes
Which is a dural septa?
the falx cerebri
The central canal of the spinal cord
contains cerebrospinal fluid.
Ridges of tissue on the surface of the cerebral hemispheres are called
gyri.
The fissure separating the right and left cerebral hemispheres is the
longitudinal fissure.
The primary auditory cortex is located in the
temporal lobe
Which a site of decussation?
optic chiasma
he parasympathetic nervous system is characterized by peripheral ganglia near
the
effector organs and by short postganglionic fibers.
The covering of entire nerves is the
epineurium
Nerves that only carry impulses toward the CNS only are
afferent nerves
Mixed cranial nerves containing both motor and sensory fibers include all of the
following except the
vestibulocochlear nerve
Spinal nerves exiting the spinal cord from the level of L4 to S4 form the
ANSWERS PLAYBOOK
The posterior root ganglion contains
cell bodies of sensory neurons
Which of the cells is particularly active in preserving the blood-brain barrier?
astrocytes
Which is not a feature of neurons?
mitotic
Afferent neurons carry ___ to the ___
sensory information, brain and spinal cord
Oligodendrocytes wrapping cellular processes around axons produce the
myelin sheath
Motor neurons are ____ and sensory neurons are ____.
efferent, afferent
Bipolar neurons are
found in the retina of the eye
Neuronal cell bodies found outside the central nervous system in groups are
called
ganglia.
The substance released at axonal endings to propagate a nervous impulse is
called a(n)
neurotransmitter
The point at which an impulse from one nerve cell is communicated to another
nerve cell is the
synapse
While skiing, Barb ran into a fence buried beneath the snow; she slammed to the
ground. For days afterward, she had intense back pain that radiated down her
lateral thigh. Her doctor said she had at least one herniated disc, which
compresessed nerves, causing her to feel pain. She is still able to walk, although
, she has no sensations from her L4-L5 dermatomes. What anatomical
characteristic of spinal nerves explains this?
The ruptured disc pressed upon the posterior, but not the anterior, root
Beboba has multiple sclerosis. She has trouble focusing her eyes and trips often
while walking to work. Demyelination of CNS neurons, caused by an autoimmune
disease, causes her symptoms. What cells in Beboba's CNS are most directly
affected?
Oligodendrocytes
Which is a dural septa?
the falx cerebri
The central canal of the spinal cord
contains cerebrospinal fluid.
Ridges of tissue on the surface of the cerebral hemispheres are called
gyri.
The fissure separating the right and left cerebral hemispheres is the
longitudinal fissure.
The primary auditory cortex is located in the
temporal lobe
Which a site of decussation?
optic chiasma
he parasympathetic nervous system is characterized by peripheral ganglia near
the
effector organs and by short postganglionic fibers.
The covering of entire nerves is the
epineurium
Nerves that only carry impulses toward the CNS only are
afferent nerves
Mixed cranial nerves containing both motor and sensory fibers include all of the
following except the
vestibulocochlear nerve
Spinal nerves exiting the spinal cord from the level of L4 to S4 form the
