Which factor(s) is/are most likely a potential cause(s) of multiple sclerosis (MS)?
Hypersensitivity reaction attacking the myelin
Environmental factors and genetic predisposition
Allergies response to antiviral medications
bacterial infection of the myelin
The Correct Answer is B
A. MS is believed to be an autoimmune disorder where the immune system attacks the myelin sheath, but it is not simply a hypersensitivity reaction.
B. Current evidence suggests that a combination of environmental factors (such as viral infections, vitamin D deficiency) and genetic predisposition contribute to the development of MS.
C. Allergic responses to antiviral medications are not linked to causing MS.
D. MS is not caused by a bacterial infection of the myelin; it is an autoimmune demyelinating disease.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Aspiration can occur in later stages of Parkinson disease due to impaired swallowing and muscle coordination, but it is not an initial symptom.
B. Dementia may develop as the disease progresses, but it is not typically seen in the early stages.
C. Akinesia, or the absence or loss of voluntary movement, may appear later but is not usually the first sign.
D. Pill-rolling movements of the hand(a type of resting tremor) are often one of the earliest signsof Parkinson disease and commonly prompt individuals to seek medical evaluation.
Correct Answer is B
Explanation
A. A fracture that has not broken through the skin is called a closed or simple fracture, not a greenstick fracture.
B. A greenstick fracture occurs when the bone bends and cracks but does not break completely, commonly seen in children due to their softer bones.
C. A bone broken into two distinct pieces is a complete fracture.
D. Bone shattered into more than two pieces is called a comminuted fracture.
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