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chorion
[ kawr-ee-on, kohr- ]
noun
- Embryology. the outermost of the extraembryonic membranes of land vertebrates, contributing to the formation of the placenta in the placental mammals.
- Zoology. the membrane around the eggs of certain insects, secreted by cells of the ovary.
chorion
/ 藞办蓴藧谤瑟蓹苍 /
noun
- the outer of two membranes that form a sac around the embryonic reptile, bird, or mammal: contributes to the placenta in mammals See also amnion
chorion
- The outer membrane that encloses the embryo of a reptile, bird, or mammal. In mammals, the chorion contributes to the development of the placenta.
Derived Forms
- 藢肠丑辞谤颈藞辞苍颈肠, adjective
Other 亚洲网紅露点 Forms
- 肠丑辞顎卹颈路辞苍顎僫肠 肠丑辞顎价颈路补濒 adjective
- 蝉耻产顎卌丑辞路谤颈路辞苍顎僫肠 adjective
亚洲网紅露点 History and Origins
Origin of chorion1
亚洲网紅露点 History and Origins
Origin of chorion1
Example Sentences
The surface of the chorion is covered evenly with minute villi, constituting a diffuse non-deciduate placenta.
The villi of the chorion are outgrowths by means of which the very early embryo attaches itself to the walls of the cavity, which it has made for itself in the wall of the uterus.
The third is the chorion, forming the outer membrane which encloses the fetus, and within which is the amnion, or innermost membrane which surrounds the fetus, and between which is another membrane, called the allantois.
In the uterus the fetus is surrounded by several membranes which are known as the amnion or inner layer, the allantois or central layer, and the chorion or outer layer.
Exochorion: that part of the chorion derived from the ectoderm: the outer layer of the chorion.
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