The blastocyst divides into two sections of cells before implanting itself into the uterine wall. What are these two sections called?

90 points! during the middle ages, when people could not care for family members in the comfort of their homes, the ill were a.allowed to die b.sent to early versions of hospitals maintained by nuns and monks c.given very potent medicine, then allowed to recover in a barn or work area d.none of the above