9. Muscle Tissue
Steps of Muscle Contraction
1PRACTICE PROBLEM
According to the sliding filament theory, the sarcomere's I band (isotropic bands) shortens during muscle contraction. The I band is the area of the sarcomere where the Z discs are anchored. As the sarcomere shortens during muscle contraction, the I band becomes narrower. What happens to the Z-discs during this process?
According to the sliding filament theory, the sarcomere's I band (isotropic bands) shortens during muscle contraction. The I band is the area of the sarcomere where the Z discs are anchored. As the sarcomere shortens during muscle contraction, the I band becomes narrower. What happens to the Z-discs during this process?