The solid ball of cells that forms during early development before implantation is called the:

What is the term for the two separate membrane bound organelles that contain the DNA of the sperm and egg after fertilization?

Which definition matches the stem below? steno-  

Spermatozoon penetrate all of the following structures to reach the secondary oocyte during fertilization except:

The umbilical arteries carry [blood] blood away from the [human].

A rise in estrogen during gestation might result in which of the following?

Identify structure 33

How far apart are contractions during the dilation phase of labor?

Which stem matches the definition below? same

Which of the following types of cells touch the inner cell mass and help to transfer nutrients from the lacunae to the developing inner cell mass and yolk sac?