embryonic membrane
[/ɛmˌbrɪˈɑnɪk ˈmɛmˌbreɪn/]
nounpl: embryonic membranes
membrana embrionária
1. A protective or nutritive tissue layer that surrounds and supports a developing embryo, derived from embryonic tissue
The embryonic membranes include the amnion, chorion, allantois, and yolk sac.
As membranas embrionárias incluem o âmnio, a córion, a alantóide e o saco vitelínico.
2. In mammals, specialized structures that facilitate gas exchange, nutrient transport, and waste removal between the embryo and mother
The placenta develops from embryonic membranes in mammalian reproduction.
A placenta se desenvolve a partir das membranas embrionárias na reprodução de mamíferos.
3. In birds and reptiles, extraembryonic membranes that provide protection and support within the egg
Birds rely on embryonic membranes to maintain proper development inside the eggshell.
As aves dependem de membranas embrionárias para manter o desenvolvimento adequado dentro da casca do ovo.
This term is primarily used in scientific, medical, and educational contexts in both Brazil and the United States. In Brazilian universities and medical schools, it is a fundamental concept in embryology courses. The term is standardized across Portuguese-speaking countries for anatomical and biological studies.
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