When skeletal muscle shortens, the I band shortens while the A band does not change in length. The explanation for this is: (Lecture: skeletal muscle, Chapters: structure, the cross-bridge cycle)

Question

Answer

Tropomyosin pulls the myosin filament towards the Z-line.

Answer

The actin and myosin filaments are both moving.

Answer

The actin filament moves along the fixed myosin filament.

Answer

The titin molecule pulls the actin filaments towards the Z-line.

Answer

The thick myosin filament moves over the thin actin filament.

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When skeletal muscle shortens, the I band shortens while the A band does not cha...

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