1.Which of Mary\'s cranial nerves is affected in this episode?( Mary felt a stabbing pain in her upper jaw and teeth that radiated out to the side of her nose. Over the next several days, she experienced several more episodes of this intense pain. A visit to the dentist revealed no abnormalities and she was referred to her physician for an evaluation. Prior to her appointment, she noticed that the symptoms were subsiding as they had previously. Her physician scheduled an appointment for a complete neurological exam the following week.) 2. In the MRI images shown in the case, you can see the lesions as bright \"white spots\" on the brain. Using what you know about the structure of a neuron, explain what is causing this spot to appear in the MRI?( The results of the MRI, shown below, were consistent with a diagnosis of relapsing-remitting multiple sclerosis (RRMS). Relapsing-remitting multiple sclerosis is a form of MS in which symptoms randomly flare up (Mary\'s episodes) and then resolve on their own. The lesions seen on the MRI on the left were associated with another episode in which Mary experienced sensory and motor disjunction in her left lower extremity. A subsequent MRI (image on the right) appeared to show improvement after three months) 3. Three months later, you can see that the spots in the MRI appear to be smaller. Using what you know about the structure of a neuron, explain what is happening to the neurons in the area where the lesions are disappearing? Signa 1.0T srsanIRMtoce Go 3/3 28/40 A S35.8 TR 4000 TE:BSVEf 5.0 hk/2.0 04:16 A112 P108 Mary Rier Shutterstock gna 1.0T TR 4000 TEE85VEf EC 2/2 15.6kHz 5.0thi/2. A112 P108 Mary Rice Solution 1. The cranial nerves that are affected in this case are the olfactory nerves and the maxillary nerves , which are a part of the trigeminal nerves. 2. The spot in the MRI is occurring as a result of demyelination of the neurons in that particular area, which is resulting in the appearance of the white lesion. The condition of multiple sclerosis is an auto immune condition of the CNS, and the lesions seen are called as MS lesions or plaques. 3. After a period of three months, when the MRI was conducted again, it was observed that the plaques found in the areas earlier had now disappeared. This implies that the myelin sheath that were demyelinated have now recovered , as shown with a complete recovery of the affected nerves, in this case. MS is also referred to be a relapsing remitting disease..

1. 1.Which of Mary's cranial nerves is affected in this episode?( Mary felt a stabbing pain in her
upper jaw and teeth that radiated out to the side of her nose. Over the next several days, she
experienced several more episodes of this intense pain. A visit to the dentist revealed no
abnormalities and she was referred to her physician for an evaluation. Prior to her appointment,
she noticed that the symptoms were subsiding as they had previously. Her physician scheduled
an appointment for a complete neurological exam the following week.)
2. In the MRI images shown in the case, you can see the lesions as bright "white spots" on the
brain. Using what you know about the structure of a neuron, explain what is causing this spot to
appear in the MRI?( The results of the MRI, shown below, were consistent with a diagnosis of
relapsing-remitting multiple sclerosis (RRMS). Relapsing-remitting multiple sclerosis is a form
of MS in which symptoms randomly flare up (Mary's episodes) and then resolve on their own.
The lesions seen on the MRI on the left were associated with another episode in which Mary
experienced sensory and motor disjunction in her left lower extremity. A subsequent MRI (image
on the right) appeared to show improvement after three months)
3. Three months later, you can see that the spots in the MRI appear to be smaller. Using what
you know about the structure of a neuron, explain what is happening to the neurons in the area
where the lesions are disappearing? Signa 1.0T srsanIRMtoce Go 3/3 28/40 A S35.8 TR 4000
TE:BSVEf 5.0 hk/2.0 04:16 A112 P108 Mary Rier Shutterstock gna 1.0T TR 4000 TEE85VEf
EC 2/2 15.6kHz 5.0thi/2. A112 P108 Mary Rice
Solution
1. The cranial nerves that are affected in this case are the olfactory nerves and the maxillary
nerves , which are a part of the trigeminal nerves.
2. The spot in the MRI is occurring as a result of demyelination of the neurons in that particular
area, which is resulting in the appearance of the white lesion. The condition of multiple sclerosis
is an auto immune condition of the CNS, and the lesions seen are called as MS lesions or
plaques.
3. After a period of three months, when the MRI was conducted again, it was observed that the
plaques found in the areas earlier had now disappeared. This implies that the myelin sheath that
were demyelinated have now recovered , as shown with a complete recovery of the affected
nerves, in this case. MS is also referred to be a relapsing remitting disease.