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mesoderm
[ mez-uh-durm, mes-, mee-zuh-, -suh- ]
noun
- the middle germ layer of a metazoan embryo.
mesoderm
/ mĕz′ə-dûrm′ /
- The middle of the three primary germ layers of the embryos of vertebrates and other complex animals. In vertebrates, the mesoderm gives rise to the muscles, bones, cartilage, connective tissue, blood, blood and lymph vessels, dermis, kidneys, and gonads. The mesoderm develops during gastrulation from either the ectoderm or the endoderm. The embryos of simpler animals lack a mesoderm.
- Compare ectoderm
Derived Forms
- ˌmesoˈdermal, adjective
Other Words From
- meso·dermal meso·dermic adjective
Example Sentences
One of those layers, the mesoderm, forms during gastrulation and gives rise to muscles, bones, and the circulatory system.
The research team also found that the new culture system produces cells like extraembryonic mesoderm, which is not yet well characterised in human embryos.
"The cell clusters we observed are likely lamprey-specific features, as they are not recognizable in the head mesoderm of both hagfish and shark embryos," explains Dr. Onai.
After gastrulation, the embryo can be thought of as an onion with three layers: the ectoderm, the mesoderm and the endoderm.
These disks eventually formed the three main cell layers of the body: the endoderm, mesoderm and ectoderm.
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