Yes, there is. On the "Developer" ribbon there is a "Restrict Editing" function in the "Protect" section of the ribbon. And, of course, there are online references that can assist you further. Some good links include:

http://shaunakelly.com/word
http://www.addbalance.com/usersguide/tables.htm

There are other links as well but, these two are pretty good.

Hope this helps.