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10 Terms
1
Notochord
A flexible rod-like structure that is present in early embryonic development, providing support and the basis for the development of vertebral columns.
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2
Bilateral symmetry
A type of symmetry where the left and right sides of the organism are mirror images of each other.
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3
Blastopore
An opening that forms during the early stages of embryonic development, which will develop into the anus or mouth.
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4
Epiboly
A process in which a sheet of cells expands to cover a larger area, typically observed during gastrulation.
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5
Gastrulation
A phase early in embryonic development during which the single-layered blastula reorganizes into a multi-layered structure called the gastrula.
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6
Gray crescent
A pigment-free region that forms in the embryo, crucial for establishing the dorsal-ventral axis and necessary for proper development.
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7
Blastula
A hollow sphere of cells formed during the early development stage, after cleavage of the fertilized egg.
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8
Dorsal lip of the blastopore
The region of the blastopore that plays a critical role in organizing the body plan of the developing embryo.
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9
Mesoderm
One of the three primary germ layers in the early embryo, which gives rise to muscles, skeleton, and other internal organs.
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10
BMP (Bone Morphogenetic Proteins)
A group of proteins that are involved in the development, maintenance, and repair of bone and cartilage, signaling to ectodermal cells.
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