Fertilization Study Guide |
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, What is embryology? The study of pregnancy events from fertilization until
birth.
What is a conceptus? The developing offspring during pregnancy.
What is the gestation period? The time from the last menstrual period until birth,
approximately 280 days.
What is the difference between an An embryo is the conceptus from fertilization
embryo and a fetus? through week 8, while a fetus is from week 9
through birth.
What occurs during the first week of Cleavage, formation of the blastocyst, and the start
development? of implantation.
What is cleavage in embryonic The series of divisions the zygote undergoes after
development? fertilization, forming a ball of cells.
What is a morula? A loose collection of blastomeres formed by day 3
after fertilization.
What is a blastocyst? An early stage of embryonic development that forms
after the morula, consisting of an outer trophoblast
and an inner cell mass.