Normal·Musculoskeletal·Skeletal muscle
Skeletal muscle — longitudinal section
Stain: H&E·Magnification: 40x·Tissue: Skeletal muscle·3 labeled regions
Wikimedia Commons · File:Musc est long 400.JPG by Ganímedes · https://commons.wikimedia.org/wiki/File:Musc_est_long_400.JPG (CC BY-SA 3.0)
Open the interactive viewer
Sign up free to pan/zoom up to 10×, tap each labeled marker for the structure's description and clinical context, and switch to quiz mode to test yourself on every region.
Create free accountDescription
Multinucleated fibers with peripheral nuclei and prominent striations. Each fiber is a single elongated cell; voluntary.
Labeled regions (3)
- 1Striations (A + I bands)
Alternating dark (A) + light (I) bands from sarcomeric register.
- 2Peripheral nuclei
Multiple nuclei pushed to the sarcolemma — pathognomonic for skeletal.
- 3Endomysium
Delicate connective tissue surrounding each fiber.
