Chapter 13: The Spinal Cord, Spinal Nerves, and
Somatic Reflexes questions with verified answers
"Somatosensory" does not refer to sensory signals from __________. A.
bones and muscles B. joints C. proprioceptors D. the viscera E. the skin
Ans✓✓✓D. the viscera
A __________ is a cordlike organ composed of numerous __________.
A. nerve fiber; nerves B. nerve fiber; axons C. nerve; axons D. nerve
fiber; neurosomas E. nerve; neurosomas Ans✓✓✓C. nerve; axons
A ganglion is a _________. A. bundle of axons in the CNS B. cluster of
dendrites in either the CNS or the PNS C. cluster of neurosomas in the
PNS D. bundle of axons in the PNS E. cluster of neurosomas in the CNS
Ans✓✓✓C. cluster of neurosomas in the PNS
A mixed nerve consists of both __________ and ___________. A.
myelinated; unmyelinated fibers B. glial cells; nerve cells C. afferent;
efferent fibers D. association; integration neurons E. spinal; cranial
fibers Ans✓✓✓C. afferent; efferent fibers
A nurse pricks your finger to type your blood. You flinch at the pain,
pulling your hand back. This is called the __________ reflex. A. painful
B. stretch C. flexor (withdrawal) D. tendon E. crossed extension
Ans✓✓✓C. flexor
, A patient with no sensation in the left thumb would most likley have
nerve damage of the __________ spinal nerve. A. T1 B. T5 C. C5 D. C6
E. L3 Ans✓✓✓D. C6
A reflex in which the sensory input and motor output are on opposite
sides of the spinal cord, is called a(n) _________ reflex arc. A.
intersegmental B. contralateral C. ipsilateral D. polysynaptic E.
monosynaptic Ans✓✓✓B. contralateral
Cerebrospinal fluid fills the space between the __________. A. dural
sheath and dura mater B. dural sheath and vertebral bones C. dura mater
and arachnoid mater D. arachnoid mater and pia mater E. dura mater and
pia mater Ans✓✓✓D. arachnoid mater and pia mater
Epidural anesthesia is introduced to the epidural space between the
__________ to block pain signals during pregnancy. A. dural sheath and
dura mater B. dural sheath and vertebral bones C. dura mater and
arachnoid mater D. arachnoid mater and pia mater E. dura mater and pia
mater Ans✓✓✓B. dural sheath and vertebral bones
Eyes and ears are innervated by _________ fibers. A. white B. visceral
C. somatic D. special E. general Ans✓✓✓D. special
If a bee sting on the right thigh causes a quick involuntary reaction of
the right arm, this would be an example of a(n) __________ reflex. A.
bilateral B. intersegmental C. withdrawal D. crossed extensor E.
contralateral Ans✓✓✓B. intersegmental
Somatic Reflexes questions with verified answers
"Somatosensory" does not refer to sensory signals from __________. A.
bones and muscles B. joints C. proprioceptors D. the viscera E. the skin
Ans✓✓✓D. the viscera
A __________ is a cordlike organ composed of numerous __________.
A. nerve fiber; nerves B. nerve fiber; axons C. nerve; axons D. nerve
fiber; neurosomas E. nerve; neurosomas Ans✓✓✓C. nerve; axons
A ganglion is a _________. A. bundle of axons in the CNS B. cluster of
dendrites in either the CNS or the PNS C. cluster of neurosomas in the
PNS D. bundle of axons in the PNS E. cluster of neurosomas in the CNS
Ans✓✓✓C. cluster of neurosomas in the PNS
A mixed nerve consists of both __________ and ___________. A.
myelinated; unmyelinated fibers B. glial cells; nerve cells C. afferent;
efferent fibers D. association; integration neurons E. spinal; cranial
fibers Ans✓✓✓C. afferent; efferent fibers
A nurse pricks your finger to type your blood. You flinch at the pain,
pulling your hand back. This is called the __________ reflex. A. painful
B. stretch C. flexor (withdrawal) D. tendon E. crossed extension
Ans✓✓✓C. flexor
, A patient with no sensation in the left thumb would most likley have
nerve damage of the __________ spinal nerve. A. T1 B. T5 C. C5 D. C6
E. L3 Ans✓✓✓D. C6
A reflex in which the sensory input and motor output are on opposite
sides of the spinal cord, is called a(n) _________ reflex arc. A.
intersegmental B. contralateral C. ipsilateral D. polysynaptic E.
monosynaptic Ans✓✓✓B. contralateral
Cerebrospinal fluid fills the space between the __________. A. dural
sheath and dura mater B. dural sheath and vertebral bones C. dura mater
and arachnoid mater D. arachnoid mater and pia mater E. dura mater and
pia mater Ans✓✓✓D. arachnoid mater and pia mater
Epidural anesthesia is introduced to the epidural space between the
__________ to block pain signals during pregnancy. A. dural sheath and
dura mater B. dural sheath and vertebral bones C. dura mater and
arachnoid mater D. arachnoid mater and pia mater E. dura mater and pia
mater Ans✓✓✓B. dural sheath and vertebral bones
Eyes and ears are innervated by _________ fibers. A. white B. visceral
C. somatic D. special E. general Ans✓✓✓D. special
If a bee sting on the right thigh causes a quick involuntary reaction of
the right arm, this would be an example of a(n) __________ reflex. A.
bilateral B. intersegmental C. withdrawal D. crossed extensor E.
contralateral Ans✓✓✓B. intersegmental
