Quiz 13: The Peripheral Nervous System
Biology
Q 1Q 1
Which division detects stimuli of the general senses and special senses?
A) visceral motor division (autonomic nervous system)
B) visceral sensory division
C) somatic motor division
D) somatic sensory division
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Multiple Choice
D
Q 2Q 2
You feel a mosquito land on your arm. This stimulus is carried to the central nervous system (CNS) by the:
A) somatic motor division.
B) visceral motor division (autonomic nervous system).
C) visceral sensory division.
D) somatic sensory division.
Free
Multiple Choice
D
Q 3Q 3
The sympathetic nervous system and parasympathetic nervous system are divisions of the:
A) somatic motor division.
B) visceral sensory division.
C) visceral motor division (autonomic nervous system).
D) somatic sensory division.
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Multiple Choice
C
Q 4Q 4
Which division of the peripheral nervous system (PNS) detects stimuli and carries them to the central nervous system (CNS)?
A) motor
B) sympathetic
C) autonomic
D) sensory
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Multiple Choice
Q 5Q 5
What is the outermost connective tissue covering of a nerve?
A) epineurium
B) epimysium
C) perineurium
D) endoneurium
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Multiple Choice
Q 6Q 6
Mixed nerves house:
A) motor neurons only.
B) sensory neurons only.
C) somatic neurons only.
D) both sensory and motor neurons.
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Multiple Choice
Q 7Q 7
Which of the following houses motor neurons?
A) anterior root of spinal nerve
B) central canal of the spinal cord
C) posterior root ganglion
D) posterior root of spinal nerve
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Multiple Choice
Q 8Q 8
What connective tissue sheath wraps the axon of a neuron?
A) epineurium
B) perineurium
C) fascicle
D) endoneurium
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Multiple Choice
Q 9Q 9
Bundles of axons within a nerve are known as:
A) dendrites.
B) the perineurium.
C) the endoneurium.
D) fascicles.
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Multiple Choice
Q 10Q 10
Where is the motor response initiated?
A) spinal nerves
B) lower motor neurons of the peripheral nervous system (PNS)
C) motor areas of the brain
D) cranial nerves
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Multiple Choice
Q 11Q 11
What is cranial nerve VIII?
A) facial nerve
B) trigeminal nerve
C) glossopharyngeal nerve
D) vestibulocochlear nerve
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Multiple Choice
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Multiple Choice
Q 13Q 13
Which cranial nerve is generally thought of as a mixed nerve?
A) accessory nerve (XI)
B) hypoglossal nerve (XII)
C) glossopharyngeal nerve (IX)
D) vestibulocochlear nerve (VIII)
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Multiple Choice
Q 14Q 14
Which cranial nerve is NOT involved in eye movement?
A) abducens nerve (VI)
B) oculomotor nerve (III)
C) trochlear nerve (IV)
D) vestibulocochlear nerve (VIII)
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Multiple Choice
Q 15Q 15
The cranial nerves that have neural connections with the tongue include all of the following EXCEPT:
A) trigeminal nerve (V).
B) trochlear nerve (IV).
C) facial nerve (VII).
D) glossopharyngeal nerve (IX).
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Multiple Choice
Q 16Q 16
Which cranial nerve detects smell?
A) oculomotor nerve (III)
B) olfactory nerve (I)
C) trochlear nerve (IV)
D) optic nerve (II)
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Multiple Choice
Q 17Q 17
An inability to swallow indicates a problem with the:
A) accessory nerve (XI) or hypoglossal nerve (XII).
B) trigeminal nerve (V) or glossopharyngeal nerve (IX).
C) trochlear nerve (IV) or abducens nerve (VI).
D) olfactory nerve (I).
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Multiple Choice
Q 18Q 18
Ms. Parker has damage to the sensory root of the facial nerve (VII). Which of the following symptoms matches this information?
A) inability to elevate the mandible
B) inability to taste
C) inability to smell
D) inability to swallow
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Multiple Choice
Q 19Q 19
Loss of balance and equilibrium can indicate damage to the:
A) hypoglossal nerve (XII).
B) accessory nerve (XI).
C) trochlear nerve (IV).
D) vestibulocochlear nerve (VIII).
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Multiple Choice
Q 20Q 20
Where does the motor portion of the facial nerve (VIII) originate?
A) midbrain
B) cerebral cortex
C) tongue
D) nuclei in the pons and medulla
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Multiple Choice
Q 21Q 21
What controls the movement of rectus abdominis, a skeletal muscle on the anterior surface of the body?
A) posterior root
B) posterior ramus
C) anterior ramus
D) posterior (dorsal) root ganglion
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Multiple Choice
Q 22Q 22
Which of the following is INCORRECT about the numbers of spinal nerves?
A) 5 pairs of lumbar spinal nerves
B) 7 pairs of cervical spinal nerves
C) 12 pairs of thoracic spinal nerves
D) 5 pairs of sacral spinal nerves
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Multiple Choice
Q 23Q 23
Which of the following carries sensory information only?
A) posterior (dorsal) root
B) posterior ramus
C) anterior ramus
D) anterior root
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Multiple Choice
Q 24Q 24
The anterior root and posterior root fuse to form a(n):
A) spinal nerve.
B) posterior horn.
C) posterior (dorsal) root ganglion.
D) anterior horn.
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Multiple Choice
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Multiple Choice
Q 26Q 26
During a boxing match, Sammy was hit on the side of the neck. He stopped breathing temporarily due to damage to the:
A) cervical plexus.
B) brachial plexus.
C) sacral plexus.
D) lumbar plexus.
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Multiple Choice
Q 27Q 27
Which plexus provides motor and sensory innervation to the upper limb?
A) cranial plexus
B) sacral plexus
C) brachial plexus
D) lumbar plexus
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Multiple Choice
Q 28Q 28
The phrenic nerve is a member of the:
A) lumbar plexus.
B) cervical plexus.
C) sacral plexus.
D) brachial plexus.
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Multiple Choice
Q 29Q 29
Which of the following does NOT belong to the brachial plexus?
A) ulnar nerve
B) median nerve
C) musculocutaneous nerve
D) phrenic nerve
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Multiple Choice
Q 30Q 30
Striking the "funny" bone is actually stimulation (or injury) to the:
A) ulnar nerve.
B) axillary nerve.
C) median nerve.
D) radial nerve.
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Multiple Choice
Q 31Q 31
What do most of the anterior rami of the thoracic spinal nerves serve?
A) median nerves
B) intercostal nerves
C) brachial nerves
D) phrenic nerves
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Multiple Choice
Q 32Q 32
The longest and largest nerve in the body belongs to the sacral plexus and is known as the:
A) femoral nerve.
B) axillary nerve.
C) common fibular nerve.
D) sciatic nerve.
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Multiple Choice
Q 33Q 33
Olfactory receptors depolarize in response to an odorant, turning a stimulus into an electrical signal. This conversion is known as:
A) propagation.
B) adaptation.
C) repolarization.
D) sensory transduction.
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Multiple Choice
Q 34Q 34
Sensory transduction occurs in:
A) CNS interneurons.
B) lower motor neurons.
C) PNS sensory neurons.
D) upper motor neurons.
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Multiple Choice
Q 35Q 35
Sensory receptors that adapt to stimuli after a certain period of time are:
A) slowly adapting receptors.
B) nociceptors.
C) thermoreceptors.
D) rapidly adapting receptors.
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Multiple Choice
Q 36Q 36
The stretch of a full urinary bladder is detected by a(n):
A) interoceptor.
B) photoreceptor.
C) thermoreceptor.
D) exteroceptor.
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Multiple Choice
Q 37Q 37
Potentially damaging stimuli that result in pain are selectively detected by:
A) photoreceptors.
B) proprioceptors.
C) chemoreceptors.
D) nociceptors.
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Multiple Choice
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Multiple Choice
Q 39Q 39
Your wrap your hands around a warm cup of hot chocolate. This sensation is detected by a:
A) chemoreceptor.
B) thermoreceptor.
C) hair follicle receptor.
D) photoreceptor.
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Multiple Choice
Q 40Q 40
Which mechanoreceptor detects deep pressure?
A) Ruffini ending
B) tactile corpuscle
C) lamellated corpuscle
D) Merkel cell fiber
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Multiple Choice
Q 41Q 41
Mechanoreceptors might detect which of the following sensations?
A) smell
B) light
C) temperature
D) pressure
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Multiple Choice
Q 42Q 42
The speed of nerve impulse transmission through the axon of a sensory neuron will be quickest in:
A) axons that adapt to stimuli.
B) axons with a greater receptive field.
C) a large -diameter, myelinated axon.
D) a small -diameter, unmyelinated axon.
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Multiple Choice
Q 43Q 43
A region of skin has a great number of sensory neurons, and each neuron has a relatively small receptive field. The two -point discrimination threshold for this skin region might be:
A) 15 mm.
B) 40 mm.
C) 25 mm.
D) 5 mm.
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Multiple Choice
Q 44Q 44
A test known as two -point discrimination threshold measures:
A) the type of sensory neuron serving a region of skin.
B) the amount of pressure we can sustain before feeling pain.
C) the type of mechanoreceptor being stimulated.
D) the relative size of receptive fields.
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Multiple Choice
Q 45Q 45
Regions of skin supplied by a spinal nerve for somatic sensation are known as:
A) lines of cleavage.
B) the ABCDE rule.
C) dermatomes.
D) the rule of nines.
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Multiple Choice
Q 46Q 46
Ms. Carroll went to her doctor's office with pain in her right shoulder blade and learned she was having a gallbladder attack. You're not surprised to hear about the unusual location of her pain since it is known as:
A) the receptive field.
B) referred pain.
C) phantom limb pain.
D) chronic pain.
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Multiple Choice
Q 47Q 47
Visceral pain may be perceived as cutaneous pain, a phenomenon known as:
A) slowly adapting reception.
B) the receptive field.
C) phantom limb pain.
D) referred pain.
Free
Multiple Choice
Q 48Q 48
What part of the nervous system integrates and interprets information from PNS sensory neurons?
A) sensory (afferent) division
B) central nervous system (CNS)
C) somatic nervous system (SNS)
D) visceral motor division, or autonomic nervous system (ANS)
Free
Multiple Choice
Q 49Q 49
What connects the upper motor neurons to lower motor neurons?
A) primary afferent neuron
B) interneurons
C) muscle fibers
D) sensory neurons
Free
Multiple Choice
Q 50Q 50
What type of neuron contacts a muscle fiber and initiates a muscle contraction?
A) upper motor neuron
B) interneuron
C) sensory neuron
D) lower motor neuron
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Multiple Choice
Q 51Q 51
What type of motor neuron stimulates skeletal muscle fibers to contract by the excitation -contraction mechanism?
A) upper motor neuron
B) y -motor neuron
C) a -motor neuron
D) interneuron
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Multiple Choice
Q 52Q 52
Motor neurons pools consist of:
A) lower motor neurons.
B) secondary afferent neurons.
C) primary afferent neurons.
D) upper motor neurons.
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Multiple Choice
Q 53Q 53
Place the following steps in order for motor control. 1. Upper motor neurons stimulate lower motor neurons.
2) Sensory information is relayed back to the cerebellum so movement can be modified if needed.
3) Upper motor neurons in the premotor cortex select a motor program.
4) Lower motor neurons stimulate a skeletal muscle to contract.
5) The basal nuclei enable the thalamus to stimulate upper motor neurons of the primary cortex.
A) 5, 3, 1, 4, 2
B) 3, 5, 1, 4, 2
C) 3, 5, 1, 2, 4
D) 2, 5, 3, 1, 4
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Multiple Choice
Q 54Q 54
Which of the following does NOT characterize a reflex?
A) Neural integration of a reflex usually occurs in the PNS.
B) The motor response to a stimulus is rapid.
C) A reflex is an automatic response to a stimulus.
D) Reflexes require a stimulus to initiate a motor response.
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Multiple Choice
Q 55Q 55
Which of the following must occur first in a reflex arc?
A) detection by receptor and delivery of stimulus
B) delivery of motor response to effector
C) integration in the central nervous system (CNS)
D) transmission from the primary motor cortex
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Multiple Choice
Q 56Q 56
What type of sensory receptors are muscle spindles and Golgi tendon organs?
A) nociceptor
B) chemoreceptors
C) thermoreceptor
D) mechanoreceptor
Free
Multiple Choice
Q 57Q 57
What is NOT true of muscle spindles?
A) Muscle spindles are found within tendons.
B) Muscle spindles are embedded within extrafusal muscle fibers.
C) The contractile poles of intrafusal fibers within muscle spindles are innervated by y -motor neurons.
D) Muscle spindles are receptors for the stretch reflex.
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Multiple Choice
Q 58Q 58
A reflex with a single synapse between the sensory and motor neurons within the spinal cord is known as a:
A) visceral reflex.
B) monosynaptic reflex.
C) polysynaptic reflex.
D) somatic reflex.
Free
Multiple Choice
Q 59Q 59
Determine the polysynaptic reflex from this list of examples.
A) patellar (knee -jerk) reflex
B) simple stretch reflex
C) jaw -jerk reflex
D) flexion (withdrawal) reflex
Free
Multiple Choice
Q 60Q 60
What reflex causes muscle relaxation?
A) flexion (withdrawal) reflex
B) Golgi tendon reflex
C) stretch reflex
D) crossed -extension reflex
Free
Multiple Choice
Q 61Q 61
The inability to produce a gag reflex could indicate a problem with the:
A) abducens nerve (VI) or trochlear nerve (IV).
B) glossopharyngeal nerve (IX) or vagus nerve (X).
C) hypoglossal nerve (XII) or vestibulocochlear nerve (VIII).
D) facial nerve (VII) or trigeminal nerve (V).
Free
Multiple Choice
Q 62Q 62
Which of the following complements the flexion (withdrawal) reflex?
A) crossed -extension reflex
B) stretch reflex
C) Golgi tendon reflex
D) gag reflex
Free
Multiple Choice
Q 63Q 63
In the crossed -extension reflex, if the right leg flexes, then the left leg:
A) extends.
B) abducts.
C) adducts.
D) flexes.
Free
Multiple Choice
Q 64Q 64
What cranial nerves are involved in the sensory and the motor roles for the corneal blink reflex?
A) trigeminal nerve (V) as sensory; facial nerve (VII) as motor
B) glossopharyngeal nerve (IX) as sensory, oculomotor nerve (III) as motor
C) trochlear nerve (IV) as sensory, abducens nerve (VI) as motor
D) optic nerve (II) as sensory, oculomotor nerve (III) as motor
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Multiple Choice
Q 65Q 65
The somatic sensory division of the peripheral nervous system (PNS) carries stimuli from both general and special senses to the central nervous system (CNS).
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True False
Q 66Q 66
Cranial nerves and spinal nerves are the two types of nerves found in the peripheral nervous system (PNS).
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True False
Q 67Q 67
The visceral motor division (autonomic nervous system) controls the body's voluntary motor functions.
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True False
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True False
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True False
Q 70Q 70
The hypoglossal nerve (XII) and glossopharyngeal nerve (IX) are both involved in taste sensation.
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True False
Q 71Q 71
The posterior (dorsal) root of a spinal nerve and the posterior ramus are considered mixed nerves since they both carry sensory and motor information.
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True False
Q 72Q 72
The lumbar nerve plexuses arise from the anterior rami of L1 - L4 and innervate structures of the pelvis and lower limb.
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True False
Q 73Q 73
Proprioceptors are located in the musculoskeletal system where they detect the movement and position of a joint or body part.
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True False
Q 74Q 74
Interoceptors detect stimuli from the inside of the body, such as blood pressure, stretch of a full urinary bladder, and the body's temperature.
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True False
Q 75Q 75
Receptive field maps show the regions of skin and the spinal nerve that supplies somatic sensation to them.
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True False
Q 76Q 76
Motor control is initiated by lower motor neurons and transmitted to upper motor neurons by interneurons situated within the CNS.
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True False
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True False
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True False
Q 79Q 79
The simple stretch reflex employs mechanoreceptors known as Golgi tendon organs to detect the degree of stretch experienced by a muscle.
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True False
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Q 84Q 84
Match the following using the image of the plexuses.
-Nerve plexus that includes the phrenic nerve
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Q 85Q 85
Match the following using the image of the plexuses.
-Nerve plexus that includes the sciatic nerve
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Q 86Q 86
Match the following using the image of the cranial nerves.
-Olfactory bulb (synapses with Cranial nerve I)
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Q 93Q 93
List the 12 pairs of cranial nerves, in numerical order, with their corresponding Roman numerals.
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Q 94Q 94
List the cranial nerves and their corresponding Roman numerals that are generally considered sensory nerves.
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Q 95Q 95
Identify and name the cranial nerves responsible for eye movement. Indicate the function of each cranial nerve identified.
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Q 97Q 97
Describe the structure of a nerve plexus and explain the advantage of this structure to its function.
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Q 99Q 99
Discuss the spinal nerves that contribute to the sacral plexuses and the body region(s) served.
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Q 100Q 100
Describe the steps of sensory transduction when a touch receptor in the skin is activated.
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Q 101Q 101
Define adaptation as it relates to sensory function. What types of mechanoreceptors adapt?
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Q 102Q 102
Explain how hair follicle receptors complement the function of tactile corpuscles and Merkel cell fibers.
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Q 103Q 103
How does the two -point discrimination threshold demonstrate the size of receptor fields in the skin?
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Q 108Q 108
Which of the following would be most devastating to damage: motor nerve, sensory nerve, or mixed nerve? Explain.
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Q 109Q 109
People suspected of having a stroke can be asked to stick their tongues straight out. A slanted or somewhat bent tongue may be just one indicator of stroke. Determine the cranial nerve affected if the tongue is bent or slanted and identify the nerve as sensory, motor, or mixed. Describe the function of this nerve.
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Q 110Q 110
Dan injured the spinal nerves emerging from the lower lumbar and sacral region of the spinal cord during a horse -riding accident. After his injury, he reported numbness in his feet. Explain the connection between the loss of sensation he has described and the plexus responsible for serving this area.
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Q 111Q 111
Which nerve of the brachial plexus becomes inflamed, resulting in carpal tunnel syndrome? Explain what regions are served by this inflamed nerve.
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Q 112Q 112
A patient sustained an injury to the lower motor neurons when a board fell on his back at a construction site. The upper motor neurons are intact and undamaged. Determine the effect, if any, on motor control.
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