PNB TEST QUESTIONS & answers
rated A+ (updated)
Vertebral artery - ANS ✔✔Katy is experiencing visual disturbances due to reduced oxygen levels
in her occipital lobe. Her physician believes they are most likely the result of a blood clot that is
obstructing her:
Accessory (Spinal Accessory) - ANS ✔✔Which of the following cranial nerves is exclusively
MOTOR?
Pia mater - ANS ✔✔While doing a tumor biopsy, a neurosurgeon's probe passes through the
meningeal layer that contains CSF. The next structure to be encountered as she moves the
probe DEEP would be the:
Using lateral (presynaptic) inhibition - ANS ✔✔The ability to determine the precise location of a
sensory stimulus is increased by:
Choroid plexus; Arachnoid villus - ANS ✔✔Cerebrospinal fluid is produced by the
________________ and can enter the venous return directly through the ________________.
Choroid - ANS ✔✔The vascular layer of the eye is known as the:
Long-term memory formation requires amyloid/tau protein synthesis - ANS ✔✔Which of the
following is a FALSE statement about learning and memory?
Inhibit the ciliary muscles and increase tension in the suspensatory ligaments - ANS ✔✔Maggie
has trouble seeing objects that are far away. As an alternative to glasses, she has started taking
,an experimental drug that regulates the contraction of the ciliary muscles that control the lens
of her eye. In order to alleviate her visual impairment, this drug should:
Activate A-beta fibers through neighboring mechanoreceptors
Activate Periaqueductal Gray
Release endogenous opioids - ANS ✔✔Which of the following pathways can reduce pain
sensation
It is responsible for hypothesis generation and-decision making - ANS ✔✔During the course of
human evolution, the frontal lobe has become disproportionately large because:
The ability to remember a new birthday - ANS ✔✔Surgical removal of the hippocampus would
result in the loss of which of the following?
the intracellular concentration of cGMP decreases. - ANS ✔✔When a rod located in the retina is
stimulated by light
Dilating; Low - ANS ✔✔Contraction of the dilator pupillae muscle is responsible for
_____________ the pupil in response to ____________ lighting conditions
Draw the object with her left hand - ANS ✔✔A split-brain patient, shown a picture in her right
visual field would NOT be able to:
Chemoreceptors - ANS ✔✔Sensory receptors that are able to detect the amount of oxygen in
the circulation would be functionally classified as:
Motor functions on the left side of the body would be impaired - ANS ✔✔As a result of damage
to the left ventral root of the spinal cord:
, False - ANS ✔✔According to the Law of Specific Nerve Energies, the adequate stimulus is the
only stimulus that will activate a particular class of sensory receptor (for example, a
thermoreceptor will only activate in response to a change in temperature)
Sensory and motor functions on the right back would be impaired - ANS ✔✔As a result of
damage to the right dorsal ramus of the spinal cord:
Free; Free - ANS ✔✔Using the structural classification system, nerve endings that transduce
pain signals are _____________ and nerve endings that transduce temperature signals are
_____________.
an off-center Retinal ganglion cell - ANS ✔✔Which of the following visual cells responds
preferentially to a dark spot in the center of its receptive field, surrounded by a ring of light?
Epithalamus - ANS ✔✔Melatonin, a hormone that regulates circadian rhythms, is produced
within the
Amygdala - ANS ✔✔When Michael was a boy he nearly drowned. As a result, he is now afraid
to go into swimming pools in gym class. The brain structure primarily responsible for this fear is
most likely the
A change in sex drive - ANS ✔✔A side effect of a recently approved medication is the
depolarization of neurons in the reticular formation. Affected individuals would most likely
report all of the following symptoms EXCEPT?
It is an important structure for both learning and memory - ANS ✔✔Which statement regarding
the hypothalamus is FALSE?
Decreased frequency of action potentials in the first order neuron - ANS ✔✔In contrast to a
strong stimulus, a weaker stimulus applied to the same spot on your finger results in:
rated A+ (updated)
Vertebral artery - ANS ✔✔Katy is experiencing visual disturbances due to reduced oxygen levels
in her occipital lobe. Her physician believes they are most likely the result of a blood clot that is
obstructing her:
Accessory (Spinal Accessory) - ANS ✔✔Which of the following cranial nerves is exclusively
MOTOR?
Pia mater - ANS ✔✔While doing a tumor biopsy, a neurosurgeon's probe passes through the
meningeal layer that contains CSF. The next structure to be encountered as she moves the
probe DEEP would be the:
Using lateral (presynaptic) inhibition - ANS ✔✔The ability to determine the precise location of a
sensory stimulus is increased by:
Choroid plexus; Arachnoid villus - ANS ✔✔Cerebrospinal fluid is produced by the
________________ and can enter the venous return directly through the ________________.
Choroid - ANS ✔✔The vascular layer of the eye is known as the:
Long-term memory formation requires amyloid/tau protein synthesis - ANS ✔✔Which of the
following is a FALSE statement about learning and memory?
Inhibit the ciliary muscles and increase tension in the suspensatory ligaments - ANS ✔✔Maggie
has trouble seeing objects that are far away. As an alternative to glasses, she has started taking
,an experimental drug that regulates the contraction of the ciliary muscles that control the lens
of her eye. In order to alleviate her visual impairment, this drug should:
Activate A-beta fibers through neighboring mechanoreceptors
Activate Periaqueductal Gray
Release endogenous opioids - ANS ✔✔Which of the following pathways can reduce pain
sensation
It is responsible for hypothesis generation and-decision making - ANS ✔✔During the course of
human evolution, the frontal lobe has become disproportionately large because:
The ability to remember a new birthday - ANS ✔✔Surgical removal of the hippocampus would
result in the loss of which of the following?
the intracellular concentration of cGMP decreases. - ANS ✔✔When a rod located in the retina is
stimulated by light
Dilating; Low - ANS ✔✔Contraction of the dilator pupillae muscle is responsible for
_____________ the pupil in response to ____________ lighting conditions
Draw the object with her left hand - ANS ✔✔A split-brain patient, shown a picture in her right
visual field would NOT be able to:
Chemoreceptors - ANS ✔✔Sensory receptors that are able to detect the amount of oxygen in
the circulation would be functionally classified as:
Motor functions on the left side of the body would be impaired - ANS ✔✔As a result of damage
to the left ventral root of the spinal cord:
, False - ANS ✔✔According to the Law of Specific Nerve Energies, the adequate stimulus is the
only stimulus that will activate a particular class of sensory receptor (for example, a
thermoreceptor will only activate in response to a change in temperature)
Sensory and motor functions on the right back would be impaired - ANS ✔✔As a result of
damage to the right dorsal ramus of the spinal cord:
Free; Free - ANS ✔✔Using the structural classification system, nerve endings that transduce
pain signals are _____________ and nerve endings that transduce temperature signals are
_____________.
an off-center Retinal ganglion cell - ANS ✔✔Which of the following visual cells responds
preferentially to a dark spot in the center of its receptive field, surrounded by a ring of light?
Epithalamus - ANS ✔✔Melatonin, a hormone that regulates circadian rhythms, is produced
within the
Amygdala - ANS ✔✔When Michael was a boy he nearly drowned. As a result, he is now afraid
to go into swimming pools in gym class. The brain structure primarily responsible for this fear is
most likely the
A change in sex drive - ANS ✔✔A side effect of a recently approved medication is the
depolarization of neurons in the reticular formation. Affected individuals would most likely
report all of the following symptoms EXCEPT?
It is an important structure for both learning and memory - ANS ✔✔Which statement regarding
the hypothalamus is FALSE?
Decreased frequency of action potentials in the first order neuron - ANS ✔✔In contrast to a
strong stimulus, a weaker stimulus applied to the same spot on your finger results in:
