Arrange the following steps for contraction in the correct sequence. 1. The muscle impulse reaches the sarcoplasmic reticulum and calcium is released.
2. Thin filaments are pulled over the thick filaments.
3. Calcium floods the sarcoplasm and binds to troponin molecules leaving active sites.
4. The impulse arrives at the synapse and travels through the transverse tubules.
5. The muscle fiber shortens and contracts.
6. Tropomyosin molecules bind to exposed active sites, linking actin and myosin

The steps with respect to the contraction should be shown in the correct way.

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Explanation:

Muscle contraction is stimulated by the movement of an action potential moving along a nerve fiber to the muscles. This event follow some series of process before being stimulated.

1. The impulse arrives at the synapse and travels through the transverse tubules.

2. The muscle impulse reaches the sarcoplasmic reticulum and calcium is released.

3. Calcium floods the sarcoplasm and binds to troponin molecules leaving active sites.

4. Tropomyosin molecules bind to exposed active sites, linking actin and myosin.

5. Thin filaments are pulled over the thick filaments.

6. The muscle fiber shortens and contracts.

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