Question: Once An Action Potential Reaches The Axon Terminals Of An α-motor Neuron, It Is Ready To Trigger A Muscle Contraction. Describe All The Steps Of Muscle Contraction, Starting At AP Initiation And Ending With Muscle Relaxation. Put The Steps Into Order 1. Action Potential Travels Down Transverse Tubules. 2. The Neurotransmitter Crosses The Synapse And …

Question: Once An Action Potential Reaches The Axon Terminals Of An α-motor Neuron, It Is Ready To Trigger A Muscle Contraction. Describe All The Steps Of Muscle Contraction, Starting At AP Initiation And Ending With Muscle Relaxation. Put The Steps Into Order 1. Action Potential Travels Down Transverse Tubules. 2. The Neurotransmitter Crosses The Synapse And …

Once an action potential reaches the axon terminals of anα-motor neuron, it is ready to trigger a muscle contraction.Describe all the steps of muscle contraction, starting at APinitiation and ending with muscle relaxation. Put the steps intoorder

1.

Action potential travels down transverse tubules.

2.

The neurotransmitter crosses the synapse and binds to receptorson the plasmalemma.

3.

Action potential triggers calcium release from SR.

4.

Calcium is actively pumped back into the SR.

5.

Action potential starts in the brain or spinal cord.

6.

Actin and myosin bind. Power strokes occur.

7.

Troponin and tropomyosin undergo conformational change in theabsence of calcium.

8.

Action potential ends.

9.

Action potential arrives at the axon terminal, causingacetylcholine to be released.