What Is the Correct Order for the Following Events That

What is the correct order for the following events that follow a nerve impulse along a sympathetic neuron, and which innervates the heart? 1)
G protein activates adenylyl cyclase
2)
Neuron releases norepinephrine
3)
Cyclic AMP activates protein kinase
4)
Receptor activates G protein
5)
Protein kinase phosphorylates Ca²⁺ channels
6)
Receptors activated on the membrane of the cardiac muscle

A) 1, 3, 4, 5, 2, 6
B) 5, 3, 4, 1, 2, 6
C) 6, 2, 4, 1, 3, 5
D) 2, 6, 4, 1, 3, 5
E) 2, 3, 4, 1, 6, 5

Correct Answer:

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