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NBME 20 Answers
A 23-year-old man comes to the physician because of ...
Area labeled ‘B’ (Mitochondrion)
Mitochondrial myopathies—rare disorders; often present with myopathy, lactic acidosis, and CNS disease, eg, MELAS syndrome (mitochondrial encephalomyopathy, lactic acidosis, and stroke-like episodes). 2° to failure in oxidative phosphorylation. Muscle biopsy often shows “ragged red fibers” (due to accumulation of diseased mitochondria).
Not sure looks like it might be free ribosomes or other such small cytosolic structure (I picked E too, thought B looked way too big!)
same here!! marked e thinking of it as a mitochondria