An 8-Year-Old Boy Is Evaluated in the Office Due to Difficulty

question 208

Multiple Choice

An 8-year-old boy is evaluated in the office due to difficulty walking.  The patient has problems running, jumping, and walking up steps.  There is no history of neurological disorders in the family.  Physical examination reveals weakness of lower extremity muscles bilaterally.  Electron microscopy of a biopsy sample taken from calf muscle is shown below. Which of the following labeled regions contains only thick filaments and no thin filaments?

• A)A
• B)B
• C)C
• D)D

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Definitions:

Occupational Prestige

The subjective evaluation people give to jobs as better or worse than others.

Subjective Evaluations

Assessments based on personal opinions, feelings, or tastes, rather than objective measurements.

Socioeconomic Status

A measure of class standing, typically indicated by income, occupational prestige, and educational attainment.

Model Minority

The model minority is a stereotype that presents a particular ethnic group as having higher socioeconomic success than the average, potentially masking underlying challenges.