extraembryonic मीनिंग इन हिंदी

उदाहरण वाक्य

1. There are two layers of mesoderm; intraembryonic and extraembryonic.
2. Extraembryonic endoderm ( including Yolk sac ) is derived from hypoblast cells.
3. Trophectoderm cells form extraembryonic tissues, which act in a supporting role for the embryo proper.
4. Mammalian embryos develop two cavities : the intraembryonic coelom and the extraembryonic coelom ( or chorionic cavity ).
5. It is formed by extraembryonic mesoderm and the two layers of trophoblast that surround the embryo and other membranes.
6. In humans, the formation of extraembryonic blood vessels starts at the beginning of the third week after fertilization.
7. PGCs come from the epiblast and move to the hypoblast to form the germinal crescent ( anterior extraembryonic structure ).
8. As development progresses, small lacunae begin to form within the extraembryonic mesoderm which enlarge to become the extraembryonic coelom.
9. As development progresses, small lacunae begin to form within the extraembryonic mesoderm which enlarge to become the extraembryonic coelom.
10. ECs were first thought to arise from extraembryonic tissues because blood vessels were observed in the avian and mammalian embryos.