Quiz Form
Quiz Form
Quiz Listing
Edit Question
1
2
3
Question Date
*
Please select a valid date.
Question
*
Which of these features is not a hallmark of a neurogenic process in muscle biopsy?
Explanation
*
Denervation in muscle leads to various changes. When the muscle fiber loses its nerve supply, it becomes atrophic and gets squeezed between other normal fibers producing angulated fibers. Following denervation, adjacent muscle fibers may get reinnervated and when that nerve degenerates, adjacent fibers degenerate, producing group atrophy. With repeated denervation and reinnervation, large groups of contiguous fibers are supplied by the same nerve. Since all fibers supplied by same nerve are of the same fiber type, groups if type 1 fibers next to groups of type 2 fibers replace the normal mosaic pattern (Fiber type grouping). Type 2 fiber atrophy is common and nonspecific, resulting from disuse, steroid use and many other causes.
Explanation Image Upload:
(JPG / JPEG / PNG Upto 2 MB only)
Reference
*
Doughty C T, Amato AA. Disorders of Skeletal Muscle. Bradley and Daroffs Neurology in Clinical Practice. 2022. Ch 1091978
Reference Image Upload:
(JPG / JPEG / PNG Upto 2 MB only)
Question Image Upload:
(JPG / JPEG / PNG Upto 2 MB only)
Video Upload:
(MP4 / Upto 10 MB only)
Option 1
*
Is Correct (Option 1):
Angulated fibers
Option 1 Image Upload:
(JPG / JPEG / PNG Upto 2 MB only)
Option 2
*
Is Correct (Option 2):
Type 2 fiber atrophy
Option 2 Image Upload:
(JPG / JPEG / PNG Upto 2 MB only)
Option 3
*
Is Correct (Option 3):
Group atrophy
Option 3 Image Upload:
(JPG / JPEG / PNG Upto 2 MB only)
Option 4
*
Is Correct (Option 4):
Fiber type grouping
Option 4 Image Upload:
(JPG / JPEG / PNG Upto 2 MB only)
