BIOS 252 EXAM 2 NEWEST 2026-2027
QUESTIONS AND CORRECT
ANSWERS | A+ GRADE VERIFIED
ANSWERS | CHAMBERLAIN
UNIVERSITY COLLEGE OF NURSING
In the two major ascending tracts, the dorsal column and
spinothalamic tracts, third-order neurons carry information
from the thalamus or upper brain stem to the cerebral
cortex.
A. True
B. False Correct Answer A. True
What is not true about the lateral corticospinal tracts?
A. The fibers descend in the spinal cord to motor neurons
that innervate skeletal muscles.
B. The motor nerve fibers in them originate primarily in the
precentral gyrus of each frontal lobe.
C. The fibers provide for subconscious control of skeletal
muscles.
D. The fibers decussate in the pyramids of the medulla
oblongata. Correct Answer C. The fibers provide for
subconscious control of skeletal muscles.
Which tract carries motor impulses to the trunk and upper
and lower limb muscles to maintain posture?
A. Spinothalamic tract
B. Corticospinal tract
C. Gracile Tract
,D. Reticulospinal tract Correct Answer D. Reticulospinal
tract
Which is a spinal cord pathway or tract that is composed
of motor fibers?
A. Fasciculus cuneatus
B. Vestibulospinal tract
C. Fasciculus gracilis
D. Spinothalamic tract Correct Answer B. Vestibulospinal
tract
Where is the fasciculus gracilis on each side of the spinal
cord found?
A. Lateral white column
B. Dorsal white column
C. Dorsal grey horn
D. Ventral white column Correct Answer B. Dorsal white
column
The neuron that ascends within the spinal cord and carries
sensory information from a dorsal grey horn to the
thalamus is designated a
A. first-order neuron
B. second-order neuron
C. quaternary neuron
D. tertiary neuron. Correct Answer B. second-order
neuron
A patient has an injury that results in damage to the lower
motor neurons (LMN). What would you expect to see in
the patient?
, A. Hypertonia
B. Flaccid paralysis
C. Hyperreflexia
D. Spastic paralysis Correct Answer B. Flaccid paralysis
During a playoff game, a college hockey player is struck
hard on the back of his neck with a hockey stick. A
computed tomography (CT) scan reveals a bone fragment
lodged into the medial aspect (fasciculus gracilis) of his
dorsal columns in the T1 area of the spinal cord. Which
functions will most likely be affected given this client's
presentation?
A. Touch, pressure, and vibratory sense from the lower
extremities
B. Touch, pressure, and vibratory sense from the upper
extremities only
C. Pain from the ipsilateral face
D. Pain and temperature sense from the lower extremities
Correct Answer A. Touch, pressure, and vibratory sense
from the lower extremities
Where are the neurons of the upper motor located?
A. In the ventral root
B. In the dorsal root ganglia
C. In the spinal cord
D. In the primary motor cortex of the cerebrum Correct
Answer D. In the primary motor cortex of the cerebrum
The origin of the tectospinal tract is from the brain stem
(midbrain).
A. True
QUESTIONS AND CORRECT
ANSWERS | A+ GRADE VERIFIED
ANSWERS | CHAMBERLAIN
UNIVERSITY COLLEGE OF NURSING
In the two major ascending tracts, the dorsal column and
spinothalamic tracts, third-order neurons carry information
from the thalamus or upper brain stem to the cerebral
cortex.
A. True
B. False Correct Answer A. True
What is not true about the lateral corticospinal tracts?
A. The fibers descend in the spinal cord to motor neurons
that innervate skeletal muscles.
B. The motor nerve fibers in them originate primarily in the
precentral gyrus of each frontal lobe.
C. The fibers provide for subconscious control of skeletal
muscles.
D. The fibers decussate in the pyramids of the medulla
oblongata. Correct Answer C. The fibers provide for
subconscious control of skeletal muscles.
Which tract carries motor impulses to the trunk and upper
and lower limb muscles to maintain posture?
A. Spinothalamic tract
B. Corticospinal tract
C. Gracile Tract
,D. Reticulospinal tract Correct Answer D. Reticulospinal
tract
Which is a spinal cord pathway or tract that is composed
of motor fibers?
A. Fasciculus cuneatus
B. Vestibulospinal tract
C. Fasciculus gracilis
D. Spinothalamic tract Correct Answer B. Vestibulospinal
tract
Where is the fasciculus gracilis on each side of the spinal
cord found?
A. Lateral white column
B. Dorsal white column
C. Dorsal grey horn
D. Ventral white column Correct Answer B. Dorsal white
column
The neuron that ascends within the spinal cord and carries
sensory information from a dorsal grey horn to the
thalamus is designated a
A. first-order neuron
B. second-order neuron
C. quaternary neuron
D. tertiary neuron. Correct Answer B. second-order
neuron
A patient has an injury that results in damage to the lower
motor neurons (LMN). What would you expect to see in
the patient?
, A. Hypertonia
B. Flaccid paralysis
C. Hyperreflexia
D. Spastic paralysis Correct Answer B. Flaccid paralysis
During a playoff game, a college hockey player is struck
hard on the back of his neck with a hockey stick. A
computed tomography (CT) scan reveals a bone fragment
lodged into the medial aspect (fasciculus gracilis) of his
dorsal columns in the T1 area of the spinal cord. Which
functions will most likely be affected given this client's
presentation?
A. Touch, pressure, and vibratory sense from the lower
extremities
B. Touch, pressure, and vibratory sense from the upper
extremities only
C. Pain from the ipsilateral face
D. Pain and temperature sense from the lower extremities
Correct Answer A. Touch, pressure, and vibratory sense
from the lower extremities
Where are the neurons of the upper motor located?
A. In the ventral root
B. In the dorsal root ganglia
C. In the spinal cord
D. In the primary motor cortex of the cerebrum Correct
Answer D. In the primary motor cortex of the cerebrum
The origin of the tectospinal tract is from the brain stem
(midbrain).
A. True
