Embryo: Difference between revisions

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[[File:Tubal Pregnancy with embryo.jpg|thumb|250px|Human Embryo (7th week of pregnancy, 5th week p.o.)]]
[[File:Tubal Pregnancy with embryo.jpg|thumb|Human Embryo (7th week of pregnancy, 5th week p.o.)]]
[[File:Amniote embryo.jpg|thumb|The embryo with its four extraembryonic membranes (embryonic envelopes): a = embryo, b = yolk sac, c = allantois (embryonic urinary bladder), d = amnion (bloodless inner eggshell membrane), e = chorion (strongly perfused outer vitelline membrane).]]


The '''embryo''' ({{Greek|ἔμβρυον}} ''émbryon'' "newborn lamb", "unborn foetus" from {{lang|grc|ἐν}} ''en'' "in" and {{lang|grc|βρύειν}} ''brýein'' "to sprout", "to swell"<ref>Wilhelm Gemoll, Karl Vretska: „Griechisch-Deutsches Schul- und Handwörterbuch“, Verlag Hölder-Pichler-Tempsky, 9th edition, ISBN 3-209-00108-1</ref>), in [[plants]] also called '''germ''' or '''seedling''', is generally a [[living being]] in the early stage of its [[ontogenetic development]]. The '''human embryo''' matures in the amniotic fluid within its four [[embryonic envelopes]] formed from its own tissue. The development of the embryo, '''embryonic development''' or '''embryogenesis''', is described by '''embryology'''.
The '''embryo''' ({{Greek|ἔμβρυον}} ''émbryon'' "newborn lamb", "unborn foetus" from {{lang|grc|ἐν}} ''en'' "in" and {{lang|grc|βρύειν}} ''brýein'' "to sprout", "to swell"<ref>Wilhelm Gemoll, Karl Vretska: „Griechisch-Deutsches Schul- und Handwörterbuch“, Verlag Hölder-Pichler-Tempsky, 9th edition, ISBN 3-209-00108-1</ref>), in [[plants]] also called '''germ''' or '''seedling''', is generally a [[living being]] in the early stage of its [[ontogenetic development]]. The '''human embryo''' matures in the amniotic fluid within its four [[embryonic envelopes]] formed from its own tissue. The development of the embryo, '''embryonic development''' or '''embryogenesis''', is described by '''embryology'''.


* In higher plants, the seedling (embryo) consists of radicle (radicula), shoot bud (plumula) and cotyledon or cotyledons. During germination, it develops into the seedling.
* In higher plants, the seedling (embryo) consists of radicle (radicula), shoot bud (plumula) and cotyledon or cotyledons. During germination, it develops into the seedling.
* In animals, the newly developing organism from a fertilised egg cell (zygote) is called an embryo as long as it is still in the mother animal or in an egg shell or eggshell.
* In animals, the newly developing organism from a fertilised egg cell (zygote) is called an embryo as long as it is still in the mother animal or in an eggshell.
* In humans, after the formation of the internal organs from the 9th week of pregnancy until birth, the embryo is called a '''foetus''' or '''fetus''' (from {{Latin|fetus}} "the brood, offspring") and its further development is called '''fetogenesis'''.
* In humans, after the formation of the internal organs from the 9th week of pregnancy until birth, the embryo is called a '''foetus''' or '''fetus''' (from {{Latin|fetus}} "the brood, offspring") and its further development is called '''fetogenesis'''.
== Fertilisation and chaos ==
[[File:GA207 127.gif|thumb|Drawing from GA 207, p. 127 (plate 14)]]
{{GZ|... I have already pointed out before, and again yesterday, that in present-day science it is often expected that it will one day be found that cells have a very complicated chemical structure, so that we would find, as it were, the most complicated chemical formula for what presents itself in the cell. But this is a completely incorrect thought.
In the cell, even in the ordinary organic cell (see drawing, light), the chemical cohesion is not stronger than in an ordinary complicated chemical compound, but on the contrary, the chemical elective affinities become chaotic, and they are most chaotic in the fertilised germ cell. The fertilised germ cell is directly chaos in relation to the material, chaos that decays, chaos that really decays. Into this decaying chaos pours what I have described to you as the human being who has just formed in the way I have described (purple). And it is not through the germ itself, but through the processes that take place in the maternal body between the embryo and the environment, that the actual physical is formed. So that which comes down from the spiritual world is actually put into the void and only impregnated with mineral substance.|207|127f}}


== Literature ==
== Literature ==

Revision as of 12:57, 14 March 2022

Human Embryo (7th week of pregnancy, 5th week p.o.)
The embryo with its four extraembryonic membranes (embryonic envelopes): a = embryo, b = yolk sac, c = allantois (embryonic urinary bladder), d = amnion (bloodless inner eggshell membrane), e = chorion (strongly perfused outer vitelline membrane).

The embryo (Greek: ἔμβρυον émbryon "newborn lamb", "unborn foetus" from ἐν en "in" and βρύειν brýein "to sprout", "to swell"[1]), in plants also called germ or seedling, is generally a living being in the early stage of its ontogenetic development. The human embryo matures in the amniotic fluid within its four embryonic envelopes formed from its own tissue. The development of the embryo, embryonic development or embryogenesis, is described by embryology.

  • In higher plants, the seedling (embryo) consists of radicle (radicula), shoot bud (plumula) and cotyledon or cotyledons. During germination, it develops into the seedling.
  • In animals, the newly developing organism from a fertilised egg cell (zygote) is called an embryo as long as it is still in the mother animal or in an eggshell.
  • In humans, after the formation of the internal organs from the 9th week of pregnancy until birth, the embryo is called a foetus or fetus (from Latin: fetus "the brood, offspring") and its further development is called fetogenesis.

Fertilisation and chaos

Drawing from GA 207, p. 127 (plate 14)

„... I have already pointed out before, and again yesterday, that in present-day science it is often expected that it will one day be found that cells have a very complicated chemical structure, so that we would find, as it were, the most complicated chemical formula for what presents itself in the cell. But this is a completely incorrect thought.

In the cell, even in the ordinary organic cell (see drawing, light), the chemical cohesion is not stronger than in an ordinary complicated chemical compound, but on the contrary, the chemical elective affinities become chaotic, and they are most chaotic in the fertilised germ cell. The fertilised germ cell is directly chaos in relation to the material, chaos that decays, chaos that really decays. Into this decaying chaos pours what I have described to you as the human being who has just formed in the way I have described (purple). And it is not through the germ itself, but through the processes that take place in the maternal body between the embryo and the environment, that the actual physical is formed. So that which comes down from the spiritual world is actually put into the void and only impregnated with mineral substance.“ (Lit.:GA 207, p. 127f)

Literature
References to the work of Rudolf Steiner follow Rudolf Steiner's Collected Works (CW or GA), Rudolf Steiner Verlag, Dornach/Switzerland, unless otherwise stated.
Email: verlag@steinerverlag.com URL: www.steinerverlag.com.
Index to the Complete Works of Rudolf Steiner - Aelzina Books
A complete list by Volume Number and a full list of known English translations you may also find at Rudolf Steiner's Collected Works
Rudolf Steiner Archive - The largest online collection of Rudolf Steiner's books, lectures and articles in English.
Rudolf Steiner Audio - Recorded and Read by Dale Brunsvold
steinerbooks.org - Anthroposophic Press Inc. (USA)
Rudolf Steiner Handbook - Christian Karl's proven standard work for orientation in Rudolf Steiner's Collected Works for free download as PDF.

References

  1. ↑ Wilhelm Gemoll, Karl Vretska: „Griechisch-Deutsches Schul- und Handwörterbuch“, Verlag Hölder-Pichler-Tempsky, 9th edition, ISBN 3-209-00108-1
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