u/Dreappy

I am a high school student so keep that in mind before judging my rather simple question too much ;)

So I recently learned that even unmyelinated axons actually have a Schwann Cell wrapped around them. That made me think about where the ion channels must be in order for continuous signal conduction to happen.

Are there little holes inside in the membrane of the Schwann Cell for Ion Channels? Does the Schwann Cell not cover the whole surface? Or how else does it work?

I mean the axon somehow needs to have contact to the extracellular room for the ion exchange to occur.

I'd really appreciate some help!