Medical Embryology Exam Questions With Verified Solutions

Medical Embryology Exam Questions With Verified Solutions Cleavage - answerthe process where a zygote divides into multiple cells blastomere - answerthe cells that the zygote divides into via cleavage morula - answerthis is what the zygote becomes after about 4 days, 16 + cells blastocyst - answerwhat the morula becomes when the blastomeres rearrange into masses when does implantation take place? - answer~day 6. fully implated at ~day 10 embryoblast - answerthe inner cell mass of the blastocyst. becomes the embryo trophoblast - answerthe outer cell mass of the blastocyst. becomes the placenta cytotrophoblast - answerinner layer of the blastocyst, contributes to the synctiotrophoblast syncytiotrophoblast - answerthe outer layer of the blastocyst that invases the uterine wall. secretes HCG hypoblast - answerroof of the exoceolomic cavity, is continuous with exocoelmic membrane ectopic pregnancy - answerwhen the blastocyst implants outside of the uterine wall, typically in the uterine tube. can be fatal to mother and fetus when does the bilaminar disc form? - answerduring implantation epiblast - answerfloor of the amniotic cavity, is continuous with the amnion hypoblast - answerthe roof of the exocoelomic cavity (formally the blastocyst cavity). is continuous with the exocoelomic cavity exocoelomic cavity - answerformally the blastocyst cavity. lined by hypoblasts and the exocoelomic membrane. will become the primary umbilical vescile (aka the yolk sac) secondary umbilical vesical - answeraka the definitive yolk sac. after this forms, the primary umbilical vesical pinches off and disappears extraembryonic coelom - answerarises within the extraembryonic mesoderm, will become the chorionic cavity