Type in to the empty spaces in each statement the correct answer or select the correct answer in the drop-down menu of options. In any spelling that requires a choice between the use of "s" or "z" in a word, choose the letter "z". Don't use abbreviations or capital letters but leave spaces in any two word answers.

Tip link proteins are attached to 

These channels are opened and closed by the back-and-forth motion of the  .

This modulates the movement of  ⁺ into the cell bodies of the