Lesson on Gastrulation and the Formation of the 3 Germ Layers known as the Ectoderm, Mesoderm and Endoderm. Gastrulation is a process whereby a bilaminar disc (comprising the epiblast and hypoblast cells) gets transformed into a trilaminar disc (comprising the germ layers of ectoderm, mesoderm, and endoderm). Gastrulation is responsible for forming the 3 germ layers including the ectoderm, mesoderm and endoderm.
After the egg is fertilized by a sperm, the resulting zygote will eventually develop into a blastocyst, which contains an inner cell mass that will become the embryo. The outer cells on the blastocyst are known as trophoblasts, which differentiate into syncytial trophoblasts and cytotrophoblasts. The syncytial trophoblasts will invade the endometrium of the uterus and implant the blastocyst. The blastocyst will eventually become embedded into the endometrium. The inner cell mass of the blastocyst will differentiate into epiblast and hypoblast cells, forming the bilaminar disc. The process of gastrulation transforms this bilaminar disc into a trilaminar disc comprised of the 3 germ layers.
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JJ
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NOTE: Although I try to be 100% accurate, if you see any mistakes in this video, please let me know and I will make a correction. Thanks so much!
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**MEDICAL DISCLAIMER**: JJ Medicine does not provide medical advice, and the information available on this channel does not offer a diagnosis or advice regarding treatment. Information presented in these lessons is for educational purposes ONLY, and information presented here is not to be used as an alternative to a healthcare professional’s diagnosis and treatment of any person/animal.
Only a physician or other licensed healthcare professional are able to determine the requirement for medical assistance to be given to a patient. Please seek the advice of your physician or other licensed healthcare provider if you have any questions regarding a medical condition.
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*Although I try my best to present accurate information, there may be mistakes in this video. If you do see any mistakes with information in this lesson, please comment and let me know.*
