Embryonic Structure
mesoderm Audio
mes·o·derm [ mez-uh-durm, mes-, mee-zuh-, -suh- ]
Subclass of:
Germ Layers
Etymology:
Greek mesos = middle + derna = the skin
Definitions related to mesoderm:
  • Middle layer of the three primary germ layers of the mammalian embryo; from it are derived the connective tissue, bone and cartilage, muscle, blood and blood vessels, lymphatics and lymphoid organs, notochord, pleura, pericardium, peritoneum, kidney and gonads.
    CRISP Thesaurus
    National Institutes of Health, 2006
  • The middle germ layer of an embryo derived from three paired mesenchymal aggregates along the neural tube.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2021
  • The middle of the three germ layers found in the trilaminar embryo (endo-, meso-, ecto-).
    NCI Thesaurus
    U.S. National Cancer Institute, 2021
  • Mesoderm, the middle of the three germ layers, or masses of cells (lying between the ectoderm and endoderm), which appears early in the development of an animal embryo. In vertebrates it subsequently gives rise to muscle, connective tissue, cartilage, bone, notochord, blood, bone marrow, lymphoid...
    Encyclopedia Britannica
    Encyclopedia Britannica, Inc., 2020
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