Question

1. the diagnostic medical term multiple sclerosis refers to:

loss of body movement caused by brain deterioration
paralysis of the lower legs caused by sciatic nerve damage
deterioration or loss of the myelin sheath nerve body covering
deterioration of the spinal cord

1. parkinsons disease causes body tremors (shaking), weak speech, shuffling of feet, and depression. other patients may experience:

hyperactivity
voice loss, sphincter problems, falls and paralysis
loss of vision, hearing deficits
muscle swelling, muscle pain

Explanation:

Question 69

Multiple Sclerosis (MS) is a disease where the myelin sheath (the protective covering around nerve fibers) deteriorates or is lost. The first option refers to brain - related movement loss (not specific to MS), the second is about sciatic nerve - related leg paralysis (not MS), and the fourth is about spinal cord deterioration (MS affects myelin, not just spinal cord in the way described). So the correct option is the one about myelin sheath loss.

Parkinson's Disease is related to the nervous system and can lead to voice loss, sphincter problems, falls, and paralysis as the disease progresses. Hyperactivity is not a symptom (Parkinson's causes bradykinesia, not hyperactivity), loss of vision and hearing deficits are not typical primary symptoms, and muscle swelling/pain are not core symptoms of Parkinson's.

Answer:

C. deterioration or loss of the myelin sheath nerve body covering

Question 70