The student nurse asks the clinical coordinator about the physiologic process of conception. Which statements should the clinical coordinator include in the teaching? Select all that apply.

1. It is the first phase in the process of a woman becoming pregnant.
2. It involves the removal of the protective coat from the sperm head.
3. It is the fusion of the sperm cell and the egg cell to form a zygote.
4. It defines the process of differentiation in the primary germ layer.
5. It includes the process of the embryo adhering to the uterine wall.
6. It is the process of developing organ systems and external features