A family of Microsoft relational database management systems designed for ease of use.
Yes, In the Options disable the Nav Pane so they don't see it at all. You can also disable the ribbon and make your form the default form so that's all they see.
There are a number of other things that can be done to limit the access a user has. You might find my blog on Login Security with VBA helpful. A search on securing Access apps will get other tools.