Category: Embryo
-
Cleavage (embryology)
In embryology, cleavage is the division of cells in the early development of the embryo, following fertilization. The zygotes of many species undergo rapid cell cycles with no significant overall growth, producing a cluster of cells the same size as the original zygote. The different cells derived from cleavage are called blastomeres and form a compact mass called the morula. Cleavage ends with the formation of the blastula, or of the blastocyst in…
-
Syncytiotrophoblast
Syncytiotrophoblast (from the Greek ‘syn’- “together”; ‘cytio’- “of cells”; ‘tropho’- “nutrition”; ‘blast’- “bud”) is the epithelial covering of the highly vascular embryonic placental villi, which invades the wall of the uterus to establish nutrient circulation between the embryo and the mother. It is a multi-nucleate, terminally differentiated syncytium, extending to 13 cm. It is the outer layer of the trophoblasts and actively invades the uterine wall, during implantation, rupturing maternal capillaries and thus establishing an interface between…
-
Cytotrophoblast
“Cytotrophoblast” is the name given to both the inner layer of the trophoblast (also called layer of Langhans) or the cells that live there. It is interior to the syncytiotrophoblast and external to the wall of the blastocyst in a developing embryo. The cytotrophoblast is considered to be the trophoblastic stem cell because the layer surrounding the blastocyst remains while daughter cells differentiate and proliferate…
Recent Posts
- 🧬 Disease Table with Low Sodium Connection
- 🧂 Sodium Reduction and Sodium Replacement: A History of Reformulation and Exploding Diseases, Including Many Diseases Unheard of Before Deadly Sodium Policies
- 🧂 The DEADLY 1500 mg Sodium Recommendation predates the WHO’s formal global sodium reduction push by nearly a decade (and it’s even worse than that)
- 🧬 What Is Beta-Glucuronidase?
- When Sugar Was Salt: Crystalline Confusion and the Covenant of Sweetness
Tags
ADAM ASPARTAME Birds Blood Bones Brain Bugs Cancer Columba Cows crystallography Death Death cults Eggs Etymology Gastrin Gold Growth hormone History Hormones Insulin Liver Mere Perplexity Metal Monkey Business Mythology Paracetamol Plants Poison Pregnancy Protein Religion Reproduction Rocks Salt Slavery Snakes Sodium the birds and the bees Thiocyanate Tobacco Tylenol Underworld Venom zinc
