Blastocyst formation Quiz on steps leading to formation of blastocyst. 3.0 / 5 based on 2 ratings ? MedicineEmbryologyUniversityNone Created by: MarthaCreated on: 07-04-14 14:25 7426315 Across 1. The solid sphere of cells formed by the cleavage of an ovum is a...? (6) 4. What is formed when the nuclei of a sperm and an oocyte fuse? (6) 5. The cavity formed in a blastocyst is called the...? (11) Down 2. The outer layer enclosing the blastocyst cavity is the...? (11) 3. What are the cells formed by the cleavage of a fertilised ovum known as? (11) 6. What develops within the epiblast? (8, 6) 7. The inner cell mass of the blastocyst initially develops into the... (8, 3, 9)
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