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Feedback Quiz
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1
The nerves that supply the upper limbs emerge from the spinal cord at the ___________level.
A)medullary cone
B)cervical
C)thoracic
D)ventral
E)lumbar
2
This spinal cord tract carries information about position and movement of the lower extremities to the brain: (p. 503, table 14.1)
A)tectospinal
B)cuneate fasciculus
C)spinothalamic
D)gracile fasciculus
E)vental corticospinal
3
During childbirth, some women receive anesthetics injected into which of the following spaces to block pain signals from the pelvic region?
A)epidural space
B)subdural space
C)fourth ventricle
D)central canal
4
The white matter provides pathways that conduct both motor and sensory information up and down the cord.
A)True
B)False
5
The spinal cord has a lumbar enlargement because the diameter of the vertebral canal is larger in the lumbar region.
A)True
B)False
6
The tapered end of the spinal cord is called the filum terminale.
A)True
B)False
7
In the spinal cord, fasciculi are found within funiculi.
A)True
B)False
8
Which of the following tracts carries sensory information from temperature receptors?
A)spinothalamic tract
B)dorsal spinocerebellar tract
C)fasciculus cuneatus
D)fasciculus gracilis
9
Which of the following tracts conveys motor signals to limb muscles maintaining balance?
A)vestibulospinal tract
B)tectospinal tract
C)corticospinal tract
D)reticulospinal tract
10
This area of the meninges has many smaller blood vessels and closely adheres to the outer surface of the central nervous system:
A)dura mater
B)subdural space
C)arachnoid membrane
D)subarachnoid space
E)pia mater
11
The ___ tracts carry sensory signals from the limb and trunk muscles to the cerebellum.
A)fasciculus gracilis
B)fasciculus cuneatus
C)spinothalamic
D)spinocerebellar
E)vestibulospinal
12
The dorsal root ganglion contains cell bodies of afferent neurons that bring sensory signals to the spinal cord.
A)True
B)False
13
Which branch of each spinal nerve gives rise to the nerves of the extremities?
A)dorsal ramus
B)dorsal root
C)ventral ramus
D)ventral root
14
Glandular secretions and contractions of all three types of muscle and glandular secretions can be controlled by a reflex.
A)True
B)False
15
Alpha motor neurons innervate the intrafusal fibers in a muscle spindle.
A)True
B)False
16
Pulling your hand off of a hot stove is an example of a
A)stretch reflex.
B)tendon reflex.
C)flexor reflex.
D)myotatic reflex.
17
Sensory neurons enter the spinal nerve cord at the:
A)ventral horns
B)dorsal horns
C)gray commissure
D)lateral horns
E)anterior median fissure
18
This plexus has a motor branch that controls the diaphragm:
A)coccygeal
B)sacral
C)lumbar
D)brachial
E)cervical
19
This plexus has sensory fibers coming from the genitalia and motor fibers that control the quadriceps muscles:
A)coccygeal
B)sacral
C)lumbar
D)brachial
E)cervical
20
The portions of the reflex arc in conduction sequence are:
A)receptor > efferent nerve > interneuron > afferent nerve > muscle
B)receptor > afferent nerve > interneuron > efferent nerve > muscle
C)receptor > interneuron > efferent nerve > afferent nerve > muscle
D)muscle > efferent nerve > interneuron > afferent nerve > receptor
E)muscle > afferent nerve > interneuron > efferent nerve > receptor
21
When the patellar reflex is elicited, the quadriceps muscles contract, but the hamstrings, their antagonists, relax. This relaxation is called:
A)reciprocal inhibition
B)the stretch reflex
C)crossed extension
D)flexor withdrawal
E)the extrafusal reaction





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