Question 1

Jean needs to have a tooth in her mandible filled.Her dentist injects a local anesthetic to block pain afferents in one of her cranial nerves.What cranial nerve does the dentist numb?

Accepted Answer

A)  trochlear
B)  trigeminal
C)  facial
D)  glossopharyngeal
E)  hypoglossalF) A) and B)
G) C) and D)

Question 2

As the size of the receptor field gets smaller,the ability to localize a specific stimulus

Accepted Answer

A)  improves.
B)  diminishes.
C)  is not affected.
D)  cannot be determined.E) A) and B)
F) A) and C)

Question 3

Which embryonic brain vesicle develops into the largest region of the adult brain?

Accepted Answer

A)  diencephalon
B)  telencephalon
C)  myelencephalon
D)  metencephalon
E)  mesencephalonF) A) and E)
G) A) and D)

Question 4

Alzheimer's disease is characterized by all of the following except  that it

Accepted Answer

A)  is the most common cause of senile dementia.
B)  is characterized by a progressive loss of memory.
C)  has a clear genetic basis.
D)  is associated with the formation of plaques.
E)  may be associated with damage to the hippocampus.F) A) and B)
G) A) and C)

Question 5

The spinal tract that unconsciously maintains balance and muscle tone of the neck,eyes,head,and limbs is the ________ tract.

Accepted Answer

A)  lateral corticospinal
B)  anterior corticospinal
C)  rubrospinal
D)  reticulospinal
E)  vestibulospinalF) B) and C)
G) C) and E)

Question 6

The posterior nuclei of the thalamus include all of the following areas except

Accepted Answer

A)  pulvinar.
B)  lateral geniculate.
C)  medial geniculate.
D)  mammillary bodies.E) B) and C)
F) C) and D)

Question 7

Sensory pathways can receive information by all of the following except

Accepted Answer

A)  a stimulus altering the permeability of a receptor membrane.
B)  a change in the flow of ions across the sensory membrane.
C)  a projection over a labeled line.
D)  conversion of a stimulus to a change in membrane potential.
E)  voluntary response.F) A) and E)
G) None of the above

Question 8

Damage to the pyramidal cells of the cerebral cortex would directly affect

Accepted Answer

A)  perception of pain.
B)  sight.
C)  voluntary motor activity.
D)  hearing.
E)  both perception of pain and voluntary motor activity.F) A) and B)
G) B) and E)

Question 9

The pons contains all of the following structures except the

Accepted Answer

A)  sensory and motor nuclei for cranial nerves V,VI,VII,and VIII.
B)  nuclei concerned with the control of respiration.
C)  tracts that link the cerebellum with the brainstem.
D)  transverse fibers that link the pons with the cerebellum.
E)  pyramids that contain motor tracts originating in the cerebral cortex.F) A) and B)
G) A) and C)

Question 10

Cerebrospinal fluid

Accepted Answer

A)  is secreted by ependymal cells.
B)  is formed by a passive process.
C)  is normally produced twice as fast as it is removed.
D)  has almost the same composition as blood plasma.
E)  is formed by a passive process and has almost the same composition as blood plasma.F) C) and D)
G) A) and B)

Question 11

The pyramidal system provides

Accepted Answer

A)  voluntary control over skeletal muscles.
B)  voluntary control over smooth muscles.
C)  involuntary control over skeletal muscles.
D)  involuntary control over smooth muscles.
E)  involuntary control over cardiac muscle.F) B) and C)
G) A) and C)

Question 12

Which structures form the secondary brain vesicles?

Accepted Answer

A)  metencephalon and myelencephalon
B)  diencephalon and triencephalon
C)  diencephalon and telencephalon
D)  diencephalon and prosencephalon
E)  prosencephalon and rhombencephalonF) B) and E)
G) A) and D)

Question 13

Receptors that monitor the position of joints belong to the category called

Accepted Answer

A)  nociceptors.
B)  chemoreceptors.
C)  baroreceptors.
D)  proprioceptors.
E)  thermoreceptors.F) All of the above
G) D) and E)

Question 14

The reflex movement of the head toward a loud noise is directed by the midbrain.Which nuclei accomplish this?

Accepted Answer

A)  substantia nigra
B)  red nuclei
C)  tectum
D)  superior colliculi
E)  inferior colliculiF) A) and E)
G) A) and D)

Question 15

A highly sensitive tactile receptor composed of dendritic processes of a single myelinated fiber that makes contact with specialized cells of the stratum basale is a

Accepted Answer

A)  lamellar corpuscle.
B)  tactile (Meissner) corpuscle.
C)  Ruffini corpuscle.
D)  tactile (Merkel) disc.
E)  root hair plexus.F) All of the above
G) C) and E)

Question 16

The information that is passed from a sensory receptor to the central nervous system is called a

Accepted Answer

A)  depolarization of a receptor.
B)  perception
C)  transducer.
D)  motor pathway.
E)  sensation.F) C) and E)
G) A) and E)

Question 17

The ventral nuclei of the thalamus perform all of the following functions except

Accepted Answer

A)  relaying input from basal ganglia to the motor areas of the cerebral cortex.
B)  relaying input from cerebellum to the motor areas of the cerebral cortex.
C)  relaying general sensory input to the primary sensory cortex.
D)  projecting visual and auditory information to the visual and auditory cortices.E) B) and D)
F) B) and C)

Question 18

What is the function of the longitudinal fasciculi?

Accepted Answer

A)  connect one gyrus to another
B)  connect the frontal lobe to the other lobes of the same hemisphere
C)  connect the cerebral hemispheres
D)  connect the cerebral cortex to the diencephalon,brainstem,cerebellum,and spinal cord
E)  connect the cerebral cortex to the cerebellar cortexF) B) and E)
G) C) and D)

Question 19

Peripheral adaptation ________ the number of action potentials that reach the CNS.

Accepted Answer

A)  decreases
B)  increases
C)  stabilizes
D)  neutralizesE) None of the above
F) All of the above

Question 20

Which of the following lies between the cerebrum and the brainstem?

Accepted Answer

A)  medulla oblongata
B)  pons
C)  midbrain
D)  diencephalon
E)  cerebellumF) B) and D)
G) A) and D)

Exam 13: The Brain, cranial Nerves, and Sensory and Motor Pathways

A highly sensitive tactile receptor composed of dendritic processes of a single myelinated fiber that makes contact with specialized cells of the stratum basale is a

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The pons contains all of the following structures except the

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The posterior nuclei of the thalamus include all of the following areas except

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The information that is passed from a sensory receptor to the central nervous system is called a

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Peripheral adaptation ________ the number of action potentials that reach the CNS.

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Damage to the pyramidal cells of the cerebral cortex would directly affect

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Which embryonic brain vesicle develops into the largest region of the adult brain?

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The ventral nuclei of the thalamus perform all of the following functions except

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Cerebrospinal fluid

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The reflex movement of the head toward a loud noise is directed by the midbrain.Which nuclei accomplish this?

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The pyramidal system provides

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Which of the following lies between the cerebrum and the brainstem?

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As the size of the receptor field gets smaller,the ability to localize a specific stimulus

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Sensory pathways can receive information by all of the following except

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The spinal tract that unconsciously maintains balance and muscle tone of the neck,eyes,head,and limbs is the ________ tract.

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Alzheimer's disease is characterized by all of the following except that it

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What is the function of the longitudinal fasciculi?

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Which structures form the secondary brain vesicles?

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Receptors that monitor the position of joints belong to the category called

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Jean needs to have a tooth in her mandible filled.Her dentist injects a local anesthetic to block pain afferents in one of her cranial nerves.What cranial nerve does the dentist numb?

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