Question

click and drag on elements in order. place the following events of sarcomere shortening in the correct order. instructions. motor neuron activates muscle fiber. signal travels down a t tubule. calcium is released from the sarcoplasmic reticulum. actin slides past myosin

Explanation:

The process of sarcomere shortening starts with the motor neuron activating the muscle fiber. This activation leads to a signal traveling down a T - tubule, which causes the release of calcium from the sarcoplasmic reticulum. The released calcium then enables actin to slide past myosin, resulting in muscle contraction.

Answer:

1. motor neuron activates muscle fiber
2. signal travels down a T tubule
3. calcium is released from the sarcoplasmic reticulum
4. actin slides past myosin