Which fibrous membrane wraps biceps brachii?

Match the glial cell with the description of what it does:

Following an infection that spread to nerve pathways, Jennifer has lost the ability to swallow.  Which cranial nerve was likely affected?

If you had a cell with no Mg2+ or Ca2+ pumps, but there were leak channels for both of these ions, which would be true:  

fill in the blank here – i have to give possible answers

When electrical impulses reach the synaptic terminal at the very end of an axon, Ca2+ channels on the cell membrane of the synaptic terminal open, and Ca2+ moves though them to enter the cell.  Explain on which side of the membrane Ca2+ is higher, and how you have determined this.  

Which is the best definition of membrane potential?

Match the cranial nerve name with its Roman numeral:

What is the name of the electrical signal that occurs at A:

Question here, answer below