COTC Week 5 Nerve Disorders and Ears Infections Physiology Paper

I’m working on a microbiology multi-part question and need an explanation to help me understand better.

1. Patients with certain nerve disorders are unable to feel pain. Why is this a disadvantage?
2. A patient complains of not being able to see the right half of the visual field with either eye. At what point in the patient’s visual pathway does the defect lie?
3. Explain how middle ear infections interfere with hearing. Of what value are the “tubes” that are sometimes surgically placed in the eardrums of patients with a history of repeated middle ear infections accompanied by chronic fluid accumulation?
4. Explain why your sense of smell is reduced when you have a cold, even though the cold virus does not directly affect the olfactory receptor cells.
5. Suzanne complained to her physician of bouts of dizziness. the physician asked her whether by “dizziness” she meant a feeling of lightheadedness, as if she felt she were going to faint (a condition known as syncope), or a feeling that she or surrounding objects in the room were spinning around ( a condition known as vertigo). Why is this condition important in the differential diagnosis of her condition? What are the possible causes of each of these symptoms?