Zoom into a myofibril and you'll see stripes. These are repeating sarcomeres. Each is built from two kinds of filament that slide past each other. Where they overlap, they make the light and dark bands. Tap each part.
Z-line
The sarcomereZ-line to Z-line
The parts
📷 Reference image
A real labeled figure to compare with the interactive above.
The Sarcomere — Mohamed Elshennawy, M.D., CC BY-SA 4.0 (via Wikimedia Commons)
