Place the Following Events in the Order They Occur to Cause

question 36

Short Answer

Place the following events in the order they occur to cause and carry out a muscle contraction.
____ sodium and other cations flow into the cell
____ ACh is released from a motor neuron
____ ACh binds receptors on the motor end plate
____ voltage-sensing ryanodine receptors allow an influx of calcium ions
____ high intracellular calcium levels allow tropomyosin to move out of the way of myosin binding sites
____ calcium is released from intracellular storage in the sarcoplasmic reticulum
____ myosin heads bind actin and muscle contraction ensues if ATP levels are adequate

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