Ectoderm

Ectoderm
[Gr. ektos - outside, without; Gr. derma - skin, leather]. The outermost germ layer of the embryo that develops during gastrulation. It will form the nervous system, epidermis, and their accessory structures.
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Ectoderm forms tissues associated with outer layers: skin, hair, sweat glands, epithelium. The brain and nervous system also develop from the ectoderm.
Mesoderm ...
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ectoderm: one of three germ layers that develops into the skin and nervous system.
egg: the haploid cell within the female ovary.
elements: the fundamental building blocks of matter within all living things.
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ectodermal cells like neurons and skin (epithelial cells)
mesodermal cells like striated muscle, smooth muscle, cartilage, and bone
endodermal cells like the intestinal epithelium.
Their process ...
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ectoderm
[Gk. ecto, outside + derma, skin]
The outermost of the three primary germ layers in animal embryos; gives rise to the outer covering and, in some phyla, the nervous system, inner ear, and lens of the eye.
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ectoderm -- The outer basic layer of tissue in those animals with true tissues. In vertebrates, for instance, the embryonic ectoderm differentiates into the skin and also the nervous system.
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ectoderm Outer layer of cells of an early embryo (gastrula stage); one of the germ layers, also sometimes used to include tissues derived from ectoderm.
ectognathous Derived character of most insects; mandibles and maxillae not in pouches.
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ectoderm - (1) the outer cellular membrane of a diploblastic animal. (2) a: the outermost of the three primary germ layers of a triploblastic embryo. b: a tissue (as neural tissue) derived from this germ layer.
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ectoderm
The outermost of the three primary germ layers in animal embryos; gives rise to the outer covering and, in some phyla, to the nervous system, inner ear, and lens of the eye.
Lab 11 Animal Diversity I
Lab 14 Gametogenesis and Development ...
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In the ventral ectoderm, Hh signals in both directions leading to the expression of the patched (ptc) gene in all neighboring cells (Nakano et al., 1989; Hooper and Scott, 1989; Ingham,, 1991).
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Developmental neuroscience, which studies how the ectodermally-derived central nervous system and mesodermally-derived peripheral nervous system develops into adulthood.
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And those cells then can give rise, as I said, to all the different cells of the body and there are three major lineages that are important-the ectoderm, the mesoderm, and the endoderm-and these three divisions make up all the cells of the body, ...
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The neural plate is thick and flat bundle of ectoderm which develops in the embryo into the nervous system.
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having two primary germ layers (ectoderm and endoderm)
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby
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The insect respired by means of air-filled internal tubes, the tracheae. This ectoderm-derived organ forms a highly branched tubular network which provides the organs with oxygen.
Reproduction
Drosophila melanogaster egg ...
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: A lower invertebrate such as jelly fish that are composed of two tissue layers (ectoderm and endoderm) and lacking the third layer (mesoderm) present in higher invertebrates and vertebrates.
Diploid number ...
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As YACs containing the relevant regions of X became available, Schlessinger and colleagues located genes for several diseases. These included an overgrowth disorder called Simpson-Golabi-Behmel syndrome and ectodermal dysplasia, ...
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