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mesoderm

[ mez-uh-durm, mes-, mee-zuh-, -suh- ]

noun

, Embryology.
  1. the middle germ layer of a metazoan embryo.


mesoderm

/ ˈmɛsəʊˌdɜːm /

noun

  1. the middle germ layer of an animal embryo, giving rise to muscle, blood, bone, connective tissue, etc See also ectoderm endoderm
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

mesoderm

/ mĕzə-dûrm′ /

  1. 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.
  2. Compare ectoderm
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Derived Forms

  • ˌmesoˈdermal, adjective
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Other Words From

  • meso·dermal meso·dermic adjective
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Word History and Origins

Origin of mesoderm1

First recorded in 1870–75; meso- + -derm
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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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