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

Brian is admitted to the hospital after a motor vehicle crash. during his stay at the hospital, physical therapists him with his recovery. this is care?

Being prepared to play is an important step in staying safe when participating in a game. select the best answer from the choices provided. t f

By 2 weeks after fertilization the morula has implanted into the uterine lining and transforms into a(n) . this time is when the , or the organ that will provide nourishment to the fetus by exchanging nutrients and waste products, begins to develop.