mesoderm

mesoderm /meso·derm/ (mez´o-derm) the middle of the three primary germ layers of the embryo, lying between the ectoderm and endoderm; from it are derived the connective tissue, bone, cartilage, muscle, blood and blood vessels, lymphatics, lymphoid organs, notochord, pleura, pericardium, peritoneum, kidneys, and gonads.mesoder´malmesoder´mic

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mes·o·derm (mz-dûrm)

n.

The middle embryonic germ layer, lying between the ectoderm and the endoderm, from which connective tissue, muscle, bone, and the urogenital and circulatory systems develop.

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meso·dermic adj.

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mesoderm

[mes′ōdurm]

Etymology: Gk, mesos + derma, skin

(in embryology) the middle of the three cell layers of the developing embryo. It lies between the ectoderm and the endoderm. Bone, connective tissue, muscle, blood, vascular and lymphatic tissue, and the pleurae of the pericardium and peritoneum are all derived from the mesoderm.

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mesoderm [mez´o-derm]

the middle of the three primary germ layers of the embryo, lying between the ectoderm and entoderm; from it are derived the connective tissue, bone, cartilage, muscle, blood and blood vessels, lymphatics, lymphoid organs, notochord, pleura, pericardium, peritoneum, kidneys, and gonads. adj., adj mesoder´mal, mesoder´mic.

somatic mesoderm the outer layer of the developing mesoderm.

splanchnic mesoderm the inner layer of the developing mesoderm.

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mesoderm,

n the middle of the three cell layers of the developing embryo. It lies between the ectoderm and the endoderm. Bone, connective tissue, muscle, blood, vascular and lymphatic tissue, and the pleurae of the pericardium and peritoneum are all derived from the mesoderm.

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mesoderm

the middle of the three primary germ layers of the embryo, lying between the ectoderm and entoderm; from it are derived the connective tissue, bone, cartilage, muscle, blood and blood vessels, lymphatics, lymphoid organs, notochord, pleura, pericardium, peritoneum, kidneys and gonads.

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extraembryonic mesoderm

located outside the developing embryo and forming its accessory organs.

paraxial mesoderm

adjacent to the mid line beneath the epiblast of the embryo which develop into somites.

somatic mesoderm

the outer layer of the developing mesoderm.

splanchnic mesoderm

the inner layer of the developing mesoderm.

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mesoderm

One of the three primary germinal layers of an embryo from which the eye is derived. It eventually forms the extraocular muscles and the orbital and ocular vasculature. See ectoderm.