Question: A typical relaxed sarcomere is about 2.3 m in length and contracts to about 2 m in length. Within the sarcomere, the thin filaments are

A typical relaxed sarcomere is about 2.3 μm in length and contracts to about 2 μm in length. Within the sarcomere, the thin filaments are about 1 μm long and the thick filaments are about 1.5 μm long.
a. Describe the overlap of thick and thin filaments in the relaxed and contracted sarcomere.
b. An individual "step" by a myosin head in one cycle pulls the thin filament about 15 nm. How many steps must each actin fiber make in one contraction?

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