mesoderm
IPA: mɛzʌdˈɝm
noun
- (embryology) One of the three tissue layers in the embryo of a metazoan animal. Through embryonic development, it will produce many internal organs of the adult, e.g. muscles, spine and circulatory system.
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Examples of "mesoderm" in Sentences
- The mesoderm is the middle layer.
- These cells are derived from mesoderm.
- These muscles are mesodermal in origin.
- The nephrotome is a section of the mesoderm.
- It may be involved in mesoderm segmentation.
- It forms primarily from splanchnic mesoderm.
- It is the most likely origin of the rostral cranial mesoderm.
- The formation of a mesoderm led to the development of a coelom.
- The mesoderm germ layer forms in the embryos of triploblastic animals.
- The peritoneum develops ultimately from the mesoderm of the trilaminar embryo.
- Down at the bottom, on either side of the hole, is a tissue called the presomitic mesoderm
- Note the absence of Hoxa13 and Hoxd13 from the corn snake mesoderm and the absence of Hoxd12 from the snake genome.
- These pairs of "cubes" of the mesoderm are the first traces of the primitive segments or somites, the so-called "protovertebrae."
- In contrast to flies, which have a clearly segmented ectoderm, the mesoderm is the primary vertebrate tissue that is organized in a metameric pattern.
- Outside the amniotic ectoderm is a thin layer of mesoderm, which is continuous with that of the somatopleure and is connected by the body-stalk with the mesodermal lining of the chorion.
- The outer layer of this ‘gastrula’ is called the ectoderm, the inner layer is the endoderm, and there are also some cells thrown into the space between the ectoderm and endoderm, which are called mesoderm.
- According to Haeckel, the origin of the generative products in the mesoderm is a heterotopic phenomenon, for he considers that they must have originated phylogenetically in one of the two primary layers, ectoderm or endoderm.
- The cells of this layer proliferate rapidly, and extending medialward surround the notochord; at the same time they grow backward on the lateral aspects of the neural tube and eventually surround it, and thus the notochord and neural tube are enveloped by a continuous sheath of mesoderm, which is termed the membranous vertebral column.
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