EXAM 3 BIOS 252 TEST BANK SOLVED QUESTIONS 100 PERCENT CORRECT ANSWERS
Question:
The spinal cord is housed in what structure? The skull The ribs The vertebral canal The pelvic bowl.
Answer:
The vertebral canal
Question:
An image of a cross section of the spinal cord would show anterior (or ventral) horns. What is in that
region? Cell bodies of motor neurons White matter Spinal nerves Ascending tracts.
Answer:
Cell bodies of motor neurons
Question:
Which of the following is not associated with the spinal cord? Coordinate the alternating contraction
of several muscle groups associated with locomotion Conduct motor information down the cord
Conduct sensory information up to the brain Mediate a reflex, such as the withdrawal of a hand from
pain Integrate sensory information at the conscious level.
Answer:
Integrate sensory information at the conscious level
Question:
Voluntary motor impulses leave the spinal cord via the _________ of grey matter. Lateral horn
Posterior horn Anterior horn Anterior column Posterior column.
Answer:
Anterior horn
,Question:
Spinal nerves are mixed. (True or False?).
Answer:
True
Question:
Which of the following is incorrect? 5 lumbar spinal nerves 8 cervical spinal nerves 11 thoracic
spinal nerves 1 coccygeal spinal nerve 5 sacral spinal nerves.
Answer:
11 thoracic spinal nerves
Question:
The dorsal root of spinal nerve contains: only autonomic fibers only motor fibers only sensory fibers
both sensory and motor fibers only somatic fibers.
Answer:
only sensory fibers
Question:
Damage to the posterior root of the thoracic spinal nerve would result in loss of motor function to
the intercostal space muscles controlled by that nerve. (True or False?).
Answer:
False
Question:
The specific patch of skin that is innervated by a specific spinal nerve is called a(n) ________.
Plexus Gray horn Dermatome Desmosome.
Answer:
,Dermatome
Question:
While playing rugby, Sonny is tackled hard. As he tries to get up, he finds that he has difficulty
flexing and adducting his left thigh and extending his left leg. Which nerve innervating the lower
limb may be damaged? Femoral Nerve Phrenic Nerve Vagus Nerve Median Nerve.
Answer:
Femoral Nerve
Question:
Which spinal cord plexus supplies the abdominal wall? More than one of the choices are correct.
cervical plexus sacral plexus brachial plexus lumbar plexus.
Answer:
More than one of the choices are correct (Sacral and Cervical Plexus)
Question:
Which of the groups of spinal nerves listed below do NOT form a plexus? T2-T11 L1-L4 C1-C5
C5-T1 L4-S4.
Answer:
T2-T11
Question:
A disease that damages the cells of the anterior gray horn will.? Inhibit autonomic regulation Cause
paralysis or weakness in skeletal muscles Interrupt proprioception Interrupt temperature recognition.
Answer:
Cause paralysis or weakness in the skeletal muscles
Question:
, Which of the following conveys sensory information to the brain and spinal cord? The autonomic
nervous system The efferent division of the peripheral nervous system The afferent division of the
peripheral nervous system The somatic nervous system.
Answer:
The afferent division of the peripheral nervous system
Question:
A reflex that causes reciprocal activation of the antagonist muscle is the? muscle stretch
crossed-extensor flexor tendon.
Answer:
crossed-extensor
Question:
An unlearned and involuntary but predictable motor response to a stimulus that is rapid and does not
involve any processing by the brain: Learned Reflex Cranial Reflex Spinal Reflex Autonomic
Reflex.
Answer:
Spinal Reflex
Question:
What do neurons in the precentral gyrus do? The communicate with motor, sensory and multimodal
association areas They allow conscious control of skilled voluntary muscle movements They
process and relay auditory and visual input The receive information from general sense receptors in
the muscle and skin.
Answer:
They allow conscious control of skilled voluntary muscle movements
Question:
What are the ascending tracts and what do they do? White matter that transmits motor information
to the brain Gray matter that transmits sensory information to the brain Gray matter that transmits
Question:
The spinal cord is housed in what structure? The skull The ribs The vertebral canal The pelvic bowl.
Answer:
The vertebral canal
Question:
An image of a cross section of the spinal cord would show anterior (or ventral) horns. What is in that
region? Cell bodies of motor neurons White matter Spinal nerves Ascending tracts.
Answer:
Cell bodies of motor neurons
Question:
Which of the following is not associated with the spinal cord? Coordinate the alternating contraction
of several muscle groups associated with locomotion Conduct motor information down the cord
Conduct sensory information up to the brain Mediate a reflex, such as the withdrawal of a hand from
pain Integrate sensory information at the conscious level.
Answer:
Integrate sensory information at the conscious level
Question:
Voluntary motor impulses leave the spinal cord via the _________ of grey matter. Lateral horn
Posterior horn Anterior horn Anterior column Posterior column.
Answer:
Anterior horn
,Question:
Spinal nerves are mixed. (True or False?).
Answer:
True
Question:
Which of the following is incorrect? 5 lumbar spinal nerves 8 cervical spinal nerves 11 thoracic
spinal nerves 1 coccygeal spinal nerve 5 sacral spinal nerves.
Answer:
11 thoracic spinal nerves
Question:
The dorsal root of spinal nerve contains: only autonomic fibers only motor fibers only sensory fibers
both sensory and motor fibers only somatic fibers.
Answer:
only sensory fibers
Question:
Damage to the posterior root of the thoracic spinal nerve would result in loss of motor function to
the intercostal space muscles controlled by that nerve. (True or False?).
Answer:
False
Question:
The specific patch of skin that is innervated by a specific spinal nerve is called a(n) ________.
Plexus Gray horn Dermatome Desmosome.
Answer:
,Dermatome
Question:
While playing rugby, Sonny is tackled hard. As he tries to get up, he finds that he has difficulty
flexing and adducting his left thigh and extending his left leg. Which nerve innervating the lower
limb may be damaged? Femoral Nerve Phrenic Nerve Vagus Nerve Median Nerve.
Answer:
Femoral Nerve
Question:
Which spinal cord plexus supplies the abdominal wall? More than one of the choices are correct.
cervical plexus sacral plexus brachial plexus lumbar plexus.
Answer:
More than one of the choices are correct (Sacral and Cervical Plexus)
Question:
Which of the groups of spinal nerves listed below do NOT form a plexus? T2-T11 L1-L4 C1-C5
C5-T1 L4-S4.
Answer:
T2-T11
Question:
A disease that damages the cells of the anterior gray horn will.? Inhibit autonomic regulation Cause
paralysis or weakness in skeletal muscles Interrupt proprioception Interrupt temperature recognition.
Answer:
Cause paralysis or weakness in the skeletal muscles
Question:
, Which of the following conveys sensory information to the brain and spinal cord? The autonomic
nervous system The efferent division of the peripheral nervous system The afferent division of the
peripheral nervous system The somatic nervous system.
Answer:
The afferent division of the peripheral nervous system
Question:
A reflex that causes reciprocal activation of the antagonist muscle is the? muscle stretch
crossed-extensor flexor tendon.
Answer:
crossed-extensor
Question:
An unlearned and involuntary but predictable motor response to a stimulus that is rapid and does not
involve any processing by the brain: Learned Reflex Cranial Reflex Spinal Reflex Autonomic
Reflex.
Answer:
Spinal Reflex
Question:
What do neurons in the precentral gyrus do? The communicate with motor, sensory and multimodal
association areas They allow conscious control of skilled voluntary muscle movements They
process and relay auditory and visual input The receive information from general sense receptors in
the muscle and skin.
Answer:
They allow conscious control of skilled voluntary muscle movements
Question:
What are the ascending tracts and what do they do? White matter that transmits motor information
to the brain Gray matter that transmits sensory information to the brain Gray matter that transmits
