Cleavage and Implantation | Human Reproduction | Class 12 | Zoology | Telangana | Khan Academy
Автор: Khan Academy India - English
Загружено: 2025-12-20
Просмотров: 58
https://www.khanacademy.org/science/t...
In this video, we explore the journey of an embryo right after fertilization to the implantation. Starting with the formation of the zygote, undertsand well-coordinated processes of cleavage, morula formation, blastulation, and blastocyst development. You’ll learn how rapid cell divisions occur without an increase in size, why the blastocyst stage is crucial for implantation, and how the embryo finally attaches to the uterine wall.
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Timestamps:
00:00 – Overview of the journey
00:37 – Journey of the zygote through the fallopian tube and timing for implantation
01:39 – Cleavage
02:31 – Blastomeres, yolk content, and microlecithal nature of the human egg
03:38 – 2-cell to 4-cell stage and indeterminate cleavage
04:34 – 8-cell stage, morula formation, and compaction
05:44 – Blastulation, formation of blastocoel, and blastocyst
06:12 – Layers of blastocyst
6:41 – Inner cell mass: structure and functions
07:36 – Hatching
08:18 –Implantation
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