blastotsüsti

Blastotsüsti is a term used in some contexts, particularly in older or less common scientific literature, to refer to a blastocyst. A blastocyst is an early stage of mammalian embryonic development. It is a hollow ball of cells formed approximately five to seven days after fertilization in humans. This stage follows the morula stage, where the embryo is a solid ball of cells.

The blastocyst consists of two main parts: the inner cell mass, which will eventually develop into the fetus, and the trophectoderm, which will form the placenta. The hollow space within the blastocyst is called the blastocoel. Implantation, the process where the embryo attaches to the uterine wall, occurs when the blastocyst reaches this developmental stage. The term "blastotsüsti" is not the standard or current scientific term used in embryology. Instead, "blastocyst" is universally recognized and employed. The usage of "blastotsüsti" may stem from variations in transliteration or older terminology that has since been superseded by more precise and standardized nomenclature.