This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Embryology, Subject name: Anatomy
[{'content': 'Embroyo develops from - \nSelect and explain. \nA. Inner cell mass, B. Troploblasts, C. Outer cell mass, D. None of the above', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Inner cell mass * As the morula enters the uterine cavity, uterine fluid diffuses through zona pellucida and fills small intercellular gaps between blastomeres, and morula is converted to blastocyst. Blastocyst consists ofa) Zona pellucida: Outer covering.b) Embryoblast: A group of centerally located cells of inner cell mass and later give rise to tissues of embryo proper.c) Trophoblast: A thin outer layer of cells formed from outer cells mass and later give rise extraembryonic tissues.d) Blastocele: Cavity of blastocyst:", 'role': 'assistant'}]