Some Non-Avian Dinosaurs Had ‘Belly Buttons,’ New Fossil Shows paleontology science
, the developing embryo is tethered to a number of the extraembryonic membranes that deliver oxygen and nutrients and remove metabolic waste products throughout embryonic development. Prior to, or soon after hatching, these membranes detach from the animal leaving a temporary or permanent umbilical scar equivalent to the navel or ‘belly button’ in some placental mammals, including humans.
“Immediately prior to or soon after hatching, this communication is severed and the yolk sac is internalized, although the opening in the abdominal wall may take several days to weeks to fully close, leaving an umbilical scar or umbilicus.”
Brasil Últimas Notícias, Brasil Manchetes
Similar News:Você também pode ler notícias semelhantes a esta que coletamos de outras fontes de notícias.
Support non-profit local media in Juneau | KTOO
Consulte Mais informação »
Non-tech-savvy seniors unable to take advantage of digital coupons, study findsA 2021 study by the Pew Research Center showed that 39% of those 65 and older do not own a smartphone, and 25% don't use the internet. That means millions of seniors can’t take advantage of digital-only deals.
Consulte Mais informação »
Judge Says NYC Can't Let Non-Citizens Vote in City ElectionsA judge on Monday blocked New York City from letting non-citizens vote for mayor and other municipal offices, a measure that Republicans had challenged as unconstitutional. In January, New York became the first major U.S. city to grant widespread municipal voting rights to noncitizens, though none had cast ballots yet. The new law, passed by the Democrat-led City Council, allowed more than…
Consulte Mais informação »
Compass Mining Leadership Steps Down Following Alleged Non-Payment DebacleCompass Mining reportedly owns over half a million in electricity bills, but two of the company's leaders stepped down.
Consulte Mais informação »
California won't be covering travel expenses for non-residents seeking abortions in the stateDemocratic Gov. Gavin Newsom says his administration's budget will not cover travel expenses for women out of state coming to California for an abortion.
Consulte Mais informação »
This Non-Binary Farmer Is Pushing for More Queer Inclusivity in AgricultureHistorically, BIPOC and queer folks have been pushed out of agriculture. At Rise & Root Farm, co-owner Michaela Hayes-Hodge is working hard to change that.
Consulte Mais informação »