Anatomy and Physio I. A 30-year-old female has had several episodes, each separa

Question

Anatomy and Physio I. A 30-year-old female has had several episodes, each separated by several months, in which she experiences brief periods of physical weakness, clumsiness of the legs and hands, visual disturbances, and mood swings. Her weakness is most prominent in her lower extremities. CT scans show evidence of multiple lesions in the white matter of the brain and spinal cord. During her last episode, there were increasing neurological deficits due to an increasing number of disseminated lesions. Prednisone (60 mg/day for five to seven days) was prescribed and helped her return to as normal and active a life as possible. A) What is the demyelinating disease affecting this individual? B) What is myelin? What is its function? C) How does the prednisone help this individual? What other treatments are possible? D) What symptoms would a nurse focus on in his or her care of a patient with this condition? E) What's her prognosis? Il. Compare and contrast action and graded potentials. Your answer should include a definition of each, types, characteristics, ionic basis, functions, and anything else necessary to answer the question. Ill. Describe factors that would affect the speed conduction of a neuron

Explanation / Answer

ANS A) A demyelinating ailment is any condition that outcomes in damage to the protective masking (myelin sheath) that surrounds nerve fibers on your mind, optic nerves and spinal twine. whilst the myelin sheath is damaged, nerve impulses gradual or even forestall, causing neurological problems.
the consequences of demyelination range relying on the ailment, and on what a part of the anxious device is broken, however they will consist of lack of imaginative and prescient, speech impairment and physical disability. in severe instances demyelination can motive paralysis.

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ANS B) Myelin is a fatty white substance that surrounds the axon of a few nerve cells, forming an electrically insulating layer. it's miles critical for the proper functioning of the frightened gadget. it's miles an outgrowth of a kind of glial cellular. the manufacturing of the myelin sheath is known as myelination or myelinogenesis.
The myelin sheath is a defensive covering that surrounds fibres referred to as axons, the lengthy skinny projections that extend from the main body of a nerve mobile or neuron. The principle function of myelin is to guard and insulate these axons and enhance their transmission of electrical impulses.

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ANS C) Prednisone is used to treat situations which includes arthritis, blood disorders, respiration problems, intense allergies, skin sicknesses, cancer, eye problems, and immune system issues. Prednisone belongs to a category of medication known as corticosteroids.

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