MEDICAL NEUROANATOMY-
PRACTICE EXAM QUESTIONS WITH
CORRECT ANSWERS
Where is acetylcholine PRIMARILY used in the peripheral nervous system - Answer-
at the neuromuscular junction
Which of these is the correct name for the space in which CSF circulates in the
spinal cord?
i. extramedullary space
ii. exterior canal
iii. central canal
iiii. epidural space - Answer-iii. central canal
In which are are lower motor neurons located?
i. dorsal root ganglion
ii. ventral grey matter
iii. autonomic ganglion
iiii. dorsal grey matter - Answer-ii. ventral gray matter
Which of these us most likely to be damaged if a patient is unable to keep
themselves from falling when they trip over something?
i. anterior corticospinal tract
ii. medial vestibulospinal tract
iii. lateral corticospinal tract
iiii. lateral vestibulospinal tract - Answer-iiii. lateral vesticbulospinal tract
True or False: the corticospinal tract is only found in primates? - Answer-False, the
corticospinal tract is only found in mammals
True or False: the gracile fasciculus carries fine touch information from the cervical
and thoracic regions - Answer-false, the gracile fasciculus carries fine touch
information from the lumbar and sacral regions
Where do the axons that form the spinthalamic tract descussate?
, i. in the vestibulonuclei
ii. in each segment of the spinal cord as they enter
iii. in the contralateral thalamus
iiii. in the medullary pyramids - Answer-in each segment of the spinal cord as they
enter
True or False: polysynaptic reflexes tend to be more complex and affect multiple
muscles
i. true
ii. false, polysynaptic relfexes tend to be less complex and affect single muscles
iii. false, polysynaptic reflexes tend to be more complex and affect single muscles
iiii. false, polysynaptic reflexes tend to be less complex and affect multiple muscles -
Answer-i. true
What are Renshaw cells?
i. inhibitory interneurons that act on sensory neurons
ii. excitatory interneurons that act on motor neurons
iii. inhibitory interneurons that act on motor neurons
iiii. excitatory interneurons that act on sensory neurons - Answer-iii. inhibitory
interneurons that act on motor neurons
Which of these symptoms would you expect to see in a patient with upper motor
neuron damage?
i. normal plantar reflex
ii. decreased plantar reflex
iii. flaccid paralysis
iiii. abnormal plantar reflex - Answer-iiii. abnormal plantar reflex (Babinski sign)
A patient exhibits complete loss of sensation only in a single dermatome. What is the
most likely cause?
i. damage to the central white matter in a single spinal segment
ii. damage to the dorsal white matter in a single spinal segment
iii. damage to the ventral gray matter in a single spinal segment
PRACTICE EXAM QUESTIONS WITH
CORRECT ANSWERS
Where is acetylcholine PRIMARILY used in the peripheral nervous system - Answer-
at the neuromuscular junction
Which of these is the correct name for the space in which CSF circulates in the
spinal cord?
i. extramedullary space
ii. exterior canal
iii. central canal
iiii. epidural space - Answer-iii. central canal
In which are are lower motor neurons located?
i. dorsal root ganglion
ii. ventral grey matter
iii. autonomic ganglion
iiii. dorsal grey matter - Answer-ii. ventral gray matter
Which of these us most likely to be damaged if a patient is unable to keep
themselves from falling when they trip over something?
i. anterior corticospinal tract
ii. medial vestibulospinal tract
iii. lateral corticospinal tract
iiii. lateral vestibulospinal tract - Answer-iiii. lateral vesticbulospinal tract
True or False: the corticospinal tract is only found in primates? - Answer-False, the
corticospinal tract is only found in mammals
True or False: the gracile fasciculus carries fine touch information from the cervical
and thoracic regions - Answer-false, the gracile fasciculus carries fine touch
information from the lumbar and sacral regions
Where do the axons that form the spinthalamic tract descussate?
, i. in the vestibulonuclei
ii. in each segment of the spinal cord as they enter
iii. in the contralateral thalamus
iiii. in the medullary pyramids - Answer-in each segment of the spinal cord as they
enter
True or False: polysynaptic reflexes tend to be more complex and affect multiple
muscles
i. true
ii. false, polysynaptic relfexes tend to be less complex and affect single muscles
iii. false, polysynaptic reflexes tend to be more complex and affect single muscles
iiii. false, polysynaptic reflexes tend to be less complex and affect multiple muscles -
Answer-i. true
What are Renshaw cells?
i. inhibitory interneurons that act on sensory neurons
ii. excitatory interneurons that act on motor neurons
iii. inhibitory interneurons that act on motor neurons
iiii. excitatory interneurons that act on sensory neurons - Answer-iii. inhibitory
interneurons that act on motor neurons
Which of these symptoms would you expect to see in a patient with upper motor
neuron damage?
i. normal plantar reflex
ii. decreased plantar reflex
iii. flaccid paralysis
iiii. abnormal plantar reflex - Answer-iiii. abnormal plantar reflex (Babinski sign)
A patient exhibits complete loss of sensation only in a single dermatome. What is the
most likely cause?
i. damage to the central white matter in a single spinal segment
ii. damage to the dorsal white matter in a single spinal segment
iii. damage to the ventral gray matter in a single spinal segment
