Order the following events observed during muscle contraction in the correct sequence 1. The sarcomere shortens 2. ATP is hydrolyzed 3. Ca 2+ binds to troponin 4. ATP binds to myosin 5. Mosin contracts F-actin 6. F-actin moves 7. Tropomyosin moves 8. Ca 2+ is released from the sarcoplasmic reticulum