- Hatchling
In oviparous biology, a hatchling is the newborn of
animal s that develop and emerge from within hard-shell eggs. The offspring ofbird s are often hatched naked and with their eyes closed. The hatchling relies totally on its parents for feeding and warmth. Hatchlings precedenestling s in the chick's life cycle. Thereptile hatchling is quite the opposite. Most baby reptiles are born with the same instincts as their parents and leave to live on their own immediately after birth.In human medicine, a hatchling is the human young having emerged from the protective capsule (
zona pellucida ) provided by the human egg in a process called hatching. [Califorrniaa, E. "Method of monitoring the body temperature of human embryos and hatchlings." U.S. Patent No. [http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=6,694,175.PN.&OS=PN/6,694,175&RS=PN/6,694,175 6,694,175] . Feb. 17, 2004.]
[baby hatching] Before hatching, the baby will grow a primitive spacesuit to provide protection after emerging from the egg capsule. The spacesuit is filled with chorionic fluid. The fluid-filled portion is also known as theblastocystic cavity . Uponimplantation , the spacesuit grows to become thebirth sac ,umbilical cord , and the chorionic portion of theplacenta . The discarded spacesuit emerges after birth as theafterbirth . The formal body of the baby hatchling was once crudely identified as theinner cell mass by developmental biologists, prior to awareness of the human hatching event. [Califorrniaa, E. "Vented microcradle for prenidial incubator." U.S. Patent No. [http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=7,121,998.PN.&OS=PN/7,121,998&RS=PN/7,121,998 7,121,998] . Oct. 17, 2006.]References
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