QUESTION 42 Which of the cranial nerves is used to swallow and provide sensory i
ID: 199029 • Letter: Q
Question
QUESTION 42
Which of the cranial nerves is used to swallow and provide sensory information for the back 1/3 of the tongue?
Facial
Vestibulocochlear
Trigeminal
Trochlear
Accessory
Glossopharyngeal
QUESTION 43
Which of the cranial nerves is used to shrug the shoulders?
Facial
Vestibulocochlear
Trigeminal
Trochlear
Accessory
Glossopharyngeal
QUESTION 44
Which of the cranial nerves is used to detect acceleration of the body and the direction of the gravitational field?
Facial
Vestibulocochlear
Trigeminal
Trochlear
Accessory
Glossopharyngeal
QUESTION 45
The primary sensory cortex is found in the _________ lobe.
frontal
parietal
occipital
insula
temporal
QUESTION 46
The cell bodies of upper motor neurons are found in the ______.
thalamus
ventral grey horn
dorsal grey horn
postcentral gyrus
precentral gyrus
QUESTION 47
Somatic sensory information from tactile discs, tactile corpuscles, and hair follicle receptors travels to the ______ side of the cerebral cortex in the _____ tract.
ipsilateral; spinocerebellar
ipsilateral; spinothalamic
contralateral; dorsal column-medial lemniscal
contralateral; corticospinal
QUESTION 48
Select the statement that is most correct.
Ganglia are collections of neuron cell bodies within the spinal cord.
Ganglia associated with afferent nerve fibers contain cell bodies of sensory neurons.
The dorsal root ganglia contain motor neurons.
The cell bodies of primary sensory neurons are located in the spinal cord.
QUESTION 49
Schwann cells are functionally similar to ________ in that both are responsible for myelinating axons.
ependymal cells
microglia
oligodendrocytes
astrocytes
QUESTION 50
Numerous presynaptic neurons synapse on one postsynaptic neuron simultaneously. The resulting cumulative effect is a depolarization that is larger in magnitude than the depolarization normally caused by an individual synapse. This cumulative effect would be called ______.
An all-or-none phenomena
Spatial summation
Temporal summation
A threshold stimulus
A subthreshold stimulus
QUESTION 51
Innervates blood vessels throughout the body.
Parasympathetic
Sympathetic
Neither
QUESTION 52
Information from proprioceptors receptors travels to the ______ side of the cerebellum in the _____ tract.
ipsilateral; spinocerebellar
ipsilateral dorsal column-medial lemniscal
contralateral; dorsal column-medial lemniscal
contralateral; spinocerebellar
QUESTION 53
Increases heart rate and causes bronchodilation.
Parasympathetic
Sympathetic
Neither
QUESTION 54
If the binding of a neurotransmitter to its receptor causes the postsynaptic membrane become ______, this is called an inhibitory postsynaptic potential (IPSP).
depolarized by only a small magnitude
more permeable to K+
depolarized, but not enough to stimulate an action potential
hyperpolarized enough to stimulate an action potential
QUESTION 55
Axons of lower motor neurons synapse _______.
in the ventral grey horn of the spinal cord
in the dorsal root ganglia
in the thalamus
at neuromuscular junctions in the periphery
QUESTION 56
A Golgi tendon organ would sense _______.
tension in the tendon caused by muscle contraction
length changes in the muscle-tendon system
the rate at which the muscle length is changing
sudden stretch of the muscle
QUESTION 57
" If the ventral root of a spinal nerve were cut, what would be the result in the region that nerve supplies?"
complete loss of sensation
a complete loss of voluntary movement
loss of neither sensation nor movement but only of autonomic control
a complete loss of sensation and movement
QUESTION 58
" A patient who received a blow to the side of the skull exhibits the following signs and symptoms on the ipsilateral side of the face: he is unable to close his eye, and the corner of his mouth droops. Which cranial nerve has been damaged?"
facial
glossopharyngeal
hypoglossal
accessory
QUESTION 59
Which of the following is not characteristic of neurons?
They conduct impulses.
They have extreme longevity.
They frequently undergo mitosis.
They have an exceptionally high metabolic rate.
QUESTION 60
Collections of nerve cell bodies outside the central nervous system are called ________.
nuclei
nerves
ganglia
tracts
QUESTION 61
Channels that open in response to a change in membrane potential and are responsible for conducting action potentials are ________ channels.
mechanically gated
voltage-gated
leakage
ligand-gated
Facial
Vestibulocochlear
Trigeminal
Trochlear
Accessory
Glossopharyngeal
Explanation / Answer
42- glossopharyngeal
43- acessory
44-vestibulocochlear
45-parietal lobe
Note - primary sensory cotex is found in lateral parietal lobe.
Vestibulocochlear nerve detect equillibrium maitain bu body thus any change in aceleration can bevdetected.
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