chorion

(1) Protective membrane around the eggs of insects and fishes. (2) Extraembryonic membrane surrounding the embryo of amniote vertebrates. The outer epithelial layer of the chorion is derived from the trophoblast.

Chorion

[egg] The chorion is the outermost membrane around the embryo in mammals, birds and reptiles. It develops from an outer fold on the surface of the yolk sac., which lies outside the vitteline envelope and is developed by the follicle cells while the egg is in the ovary. == Function in Amniotes == The chorion is one of the four extraembryonic...
Found on http://en.wikipedia.org/wiki/Chorion_(egg)

chorion

[n] - outermost membranous sac enclosing the embryo in higher vertebrates (reptiles
Found on http://www.webdictionary.co.uk/definition.php?query=chorion

Chorion

The outermost layer of the two foetal membranes, which envelope the growing foetus and serves as a protective barrier against infection
Found on http://www.encyclo.co.uk/local/20415

Chorion

The outer casing of an egg.
Found on http://www.butterfly-guide.co.uk/help/gloss.htm

Chorion

Chorion: The outermost of the two fetal membranes - the amnion is the innermost --. which together surround the embryo. The chorion develops villi (vascular fingers) and gives rise to the placenta. In Greek, the word "chorion" means "skin or leather."
Found on http://www.medterms.com/script/main/art.asp?articlekey=2719

Chorion

Cho'ri·on noun [ New Latin , from Greek ....] 1. (Anat.) (a) The outer membrane which invests the fetus in the womb; also, the similar membrane investing many ova at certain stages of development. (b) The true skin, or cutis. 2. (Botany) The outer m...
Found on http://www.encyclo.co.uk/webster/C/72

chorion

1. Protective membrane around the eggs of insects and fishes. ... 2. Extraembryonic membrane surrounding the embryo of amniote vertebrates. The outer epithelial layer of the chorion is derived from the tropoblast. ... (18 Nov 1997) ...
Found on http://www.encyclo.co.uk/local/20973

chorion

noun outermost membranous sac enclosing the embryo in higher vertebrates (reptiles, birds and mammals)
Found on https://www.encyclo.co.uk/local/20974

chorion

(kor´e-on) an extraembryonic fetal membrane, composed of trophoblast lined with mesoderm; it develops villi, becomes vascularized, and forms the fetal part of the placenta. chorion frondosum the placental part of the chorion; it is covered by villi. chorion laeve ...
Found on http://www.encyclo.co.uk/local/21001

Chorion

• (n.) The outer membrane of seeds of plants. • (n.) The outer membrane which invests the fetus in the womb; also, the similar membrane investing many ova at certain stages of development. • (n.) The true skin, or cutis.
Found on http://thinkexist.com/dictionary/meaning/chorion/

chorion

in reptiles, birds, and mammals, the outermost membrane around the embryo. It develops from an outer fold on the surface of the yolk sac. In insects ... [9 related articles]
Found on http://www.britannica.com/eb/a-z/c/77

chorion

chorion 1. The outermost membranous sac enclosing the embryo in higher vertebrates (reptiles, birds and mammals). 2. The outermost of the two fetal membranes, the amnion being the innermost, which together surround the embryo. The chorion develops villi (vascular fingers) and gives rise to the placenta. In Greek, the word chorion means, 'skin' or...
Found on http://www.wordinfo.info/words/index/info/view_unit/461/

Chorion

The outer covering or shell of the spider or insect egg.
Found on http://www.xs4all.nl/~ednieuw/Spiders/Spiderglossary.htm

chorion

One of the two membranes that surrounds the embryo. The chorion lies outside the amnion and develops into the placenta. Chorionic tissue may be removed for antenatal diagnosis.
Found on http://www.daviddarling.info/encyclopedia/C/chorion.html

Chorion

The outer membrane of the amniotic sac that envelopes the fetus during fetal development. The cells of the chorion are sampled during chorionic villus sampling.
Found on http://www.pregnology.com/Pregnancy-dictionary/

Chorion

The chorion is the outermost layer of the fertilized ovum (zygote) that furnishes a protective and nutritive covering and produces the amniotic fluid. The amniotic fluid protects the embryo and fetus during pregnancy and the rupture of the amniotic sac is one of the first signs that labor has begun. During childbirth the amniotic fluid lubricates t...
Found on http://www.probertencyclopaedia.com/browse/EC.HTM

chorion

Type: Term Pronunciation: kō′rē-on Definitions: 1. The outermost fetal membrance in human embryos, the villous part of which becomes the fetal part of the placenta. Synonyms: membrana serosa1
Found on http://www.medilexicon.com/medicaldictionary.php?t=17306

chorion

Outermost of the three membranes enclosing the embryo of reptiles, birds, and mammals; the amnion is the innermost membrane
Found on http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0007968.html

chorion

An extraembryonic membrane that participates in the formation of the placenta.
Found on http://www.mhhe.com/biosci/abio/glossary.mhtml

chorion

The two-layered structure formed from the trophoblast after implantation; secretes human chorionic gonadotropin.
Found on http://www.emc.maricopa.edu/faculty/farabee/biobk/biobookglossc.html

Chorion

[company] Chorion Limited was a major international media production company with offices in London, New York and Sydney. The company produced TV shows and feature films, and was best known for the heritage properties included in its portfolio. These included children`s characters such as Paddington Bear, Peter Rabbit, The Mr. Men, The Very...
Found on http://en.wikipedia.org/wiki/Chorion_(company)

Chorion

In humans and most mammals, the chorion is one of the membranes that exist during pregnancy between the developing fetus and mother. It is formed by extraembryonic mesoderm and the two layers of trophoblast and surrounds the embryo and other membranes. The chorionic villi emerge from the chorion, invade the endometrium, and allow transfer of nutri...
Found on http://en.wikipedia.org/wiki/Chorion

Chorion

The inner shell or covering of the insect egg.
Found on http://www.earthlife.net/insects/glossary.html

Chorion

The two-layered structure formed from the trophoblast after implantation; secretes human chorionic g
Found on http://www.superglossary.com/Glossary/Science/Biology/
No exact match found