CinderBlock

I know that dendrites of a neuron receive a chemical "code" that produces an electrical current of either excitatory or inhibitory signals inside the neuron. This electrical current gets sent down the axon. If there is enough energy to reach the requirement for the threshold, then the action potential is reached. Once that happens, Sodium floods back into the neuron. The vesicles then send out neurotransmitters (chemical signals) through the synapse to the next neuron. I just don't get what the depolarization of the neuron (which happens when the sodium flows back inside) has to do with the signal being sent.

I posted an answer to this question:

http://answers.yahoo.com/question/index;_ylt=AkC0L...

Then realized my answer was wrong so I deleted it. Now I know the right answer (use the ADDRESS() function).

I reopened the question, and it says "0 Answers" and "Be the first to answer this question" but it also says "You have already answered this question" and the Answer button is not being displayed.

Should I do it now, while the tree is still dormant, or wait until later this spring after it flowers, or in the summer or fall? This branch would be about one fifth of the tree. It is growing toward our house, and encroaching upon a smaller dogwood. I want to remove the branch to make sure the dogwood has room to grow.