True or False. Action potential is generated and propagated along the sarcolemma and down the transverse tubules. Neurotransmitter is released and diffuses across the synaptic cleft and attaches to ACh receptors on the sarcolemma. Action potential triggers the release of Ca2 from the terminal cisternae of the sarcoplasmic reticulum.

Explanation:

False incorrect sequence.

Explanation:

1,Stimulus reaches the presynaptic  neuron membrane.

2.Calcium channels opens, and calcium ion diffuses into the neurone.

3.Vessicles of neurotransmitter acetycholine fused with the membrane of presynaptic neuron,   Neurotransmitter is released and diffuses across the synaptic cleft and attaches to ACh receptors on the sarcolemma.

4 The arrival of Action potential opens Na+ channels  in the sacolemma.

5, Na+ diffuses in causing depolarization  of the sacolemma,which  causes action potential to spreads along it length.

6. Action potential is generated and propagated along the sarcolemma and down the transverse tubules.

7. Action potential triggers the release of Ca2 from the terminal cisternae of the sarcoplasmic reticulum

8.Calciumion binds  to tropin, tropomyosin exposes the myosin-binding sites,cross-bridges is formed , and sacomere formed.

brown

explanation:

from my research i have to the conclusion that decomposers, such as fungi, bacteria and invertebrates, play a critical role in nutrient cycling and without them the earth's ecosystem may not support life as we know it. elements such as carbon, nitrogen and phosphorus exist in limited amounts on earth, although huge amounts of carbon are being released into the atmosphere from underground sources now by humans. it is still extremely important that other nutrients be retained by the process of re-use. decomposers are organisms that are able to chemically break down dead material and make these elements available for use by other organisms. without this breakdown of dead material, dead bodies would pile up. so decomposers also play a role in clean up also. without them, life might not continue as we know it and dead material would overwhelm the earth.