UITableView how to implement loadNext/loadPrev to limit number of rows displayed

Question

if a UITableView is used to show potentially thousands of items and we want to limit the number of records displayed at a time (sort of pagination but for UITableView), is there a way to create a loadPrevious button? I have seen a few implementations of loadNext, but what about loadPrevious? specially when we don't want UITableView to scroll with respect to use i.e. if user taps loadNext, the next set of rows should be displayed below the screen so that user can scroll at will.

thanks in advance for any/all help.