"That man over there... aind ain't I a woman" - Rhetorical Question
This is beacause of the question posed by the speaker "ain't I a woman." This is more of a statement of fact than an interrogative statement. As such the speaker isn't looking for an answer, but is instead making a point.
"For who is there... torn from his limbs" - Rhetorical Question for the same reason as above.
It seems to be called a Story within story, which is when a character within the lager story narrates a story of their own. I hope that wasn't to cofusing.It was all I could find.