Dictionary » E » Embryo

Embryo

Definition

noun, plural: embryos

(zoology) A multicellular organism that primarily undergoes extensive and rapid growth and differentiation between the time of fertilization and fetal stage in higher forms while larval stage in lower forms

(human biology) Baby in the early developmental stage, after the zygote phase (at fertilization) to week eight from the time of fertilization (note: week eight from the time of fertilization is equivalent to 10 weeks gestational age)

(botany) A young, developing plant, such as the rudimentary plant inside the seed of higher plant forms or that inside the archegonium of mosses and ferns


Supplement

In humans, the embryo refers to the growing organism after being a zygote and before being a fetus. The zygote becomes an embryo immediately after series of cell division. After the continuous cell division and differentiation in eight weeks, the embryo becomes a fetus in which the organism undergoes extensive organogenesis.


Word origin: Ancient Greek embruon (fetus), from en-, in- + bruĊ (grow, swell)

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Results from our forum


Human Gamete Compatibility Going Backwards

... homologous gene from the second parent. In theory, if neither parent organism has any such genes, the organisms are "compatible". Once embryo is formed, the new genome will dictate appearance of a new organism (whether it's going to be a hoof or a hand). Unless there is a serious clash ...

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by Cat
Sat Jan 11, 2014 7:56 pm
 
Forum: Evolution
Topic: Human Gamete Compatibility Going Backwards
Replies: 5
Views: 1512

2minute animation of a chicken embryo developing. 21 days

... I have just completed but didn't have a file to post in the Share Your Work area. The PoultryCRC have just developed an animation of a chicken embryo to help those teaching embryology. Not only is it scientifically accurate but it is also very beautiful. I've put it up on YouTube so it can ...

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by TeachMWell
Wed Nov 20, 2013 10:36 pm
 
Forum: General Discussion
Topic: 2minute animation of a chicken embryo developing. 21 days
Replies: 0
Views: 406

How long will myocytes survive in plasma+saline?

... I've kept myocytes in-vitro with DMEM or the likes a few years ago in college, as trypsinized adhesion culture and explant chunk from chicken embryo. I've also made hybridomas from mice, so I know about rinsing tissue of red blood cells with PBS, I think I did this with the chicken embryo ...

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by nmz787
Tue Oct 15, 2013 9:26 pm
 
Forum: Cell Biology
Topic: How long will myocytes survive in plasma+saline?
Replies: 0
Views: 495

Atavism

We all have had tails - they develop in the embryo but are resorbed (not in all cases, the ones that have some appearance at birth), and they are definitely tails. Tails (post-anal) are a shared feature of all mammals, and the embryonic persistence ...

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by Darby
Tue Aug 20, 2013 11:19 pm
 
Forum: Human Biology
Topic: Atavism
Replies: 4
Views: 1222

Atavism

... sad case of a baby boy born in Bangladesh on August 25, 2008. He had two heads, and lived only a few days. The boy, named Kiron, was born from one embryo. The mother's gynecologist, Mohamad Abdul Bari, said the baby had one stomach and ate normally with his two mouths. He had one genital organ ...

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by Sumanth001
Tue Aug 20, 2013 6:40 am
 
Forum: Human Biology
Topic: Atavism
Replies: 4
Views: 1222
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