BLASTODERMIC LAYER Meaning and
Definition
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The term "blastodermic layer" refers to a significant stage in embryogenesis, wherein the zygote undergoes its initial cell divisions and transforms into a multicellular structure known as the blastoderm. The blastodermic layer is a critical component of the developing embryo, as it gives rise to all subsequent tissues and organs.
During the blastodermic layer stage, the zygote undergoes rapid mitotic cell divisions, forming a disc-shaped structure consisting of a single layer of cells. This layer is commonly referred to as the blastoderm. The blastodermic layer is particularly crucial in organisms that exhibit holoblastic cleavage, where the entire egg undergoes division. In other organisms with meroblastic cleavage, only a part of the egg is affected by cell divisions, and the blastodermic layer is formed in that region.
The cells within the blastodermic layer are undifferentiated and possess the potential to differentiate into various cell types and tissues. As development progresses, these cells start migrating and proliferating to form the three germ layers known as the endoderm, mesoderm, and ectoderm. These germ layers give rise to the major tissues and organs of the developing organism.
Understanding the blastodermic layer and its subsequent differentiation is essential in the field of developmental biology and embryology. It provides insights into the development of different organisms and is integral to comprehending the process of morphogenesis and organogenesis.
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One of the germ layers: epiblast, mesoblast, or hypoblast.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for BLASTODERMIC LAYER
- vlastodermic layer
- nlastodermic layer
- hlastodermic layer
- glastodermic layer
- bkastodermic layer
- bpastodermic layer
- boastodermic layer
- blzstodermic layer
- blsstodermic layer
- blwstodermic layer
- blqstodermic layer
- blaatodermic layer
- blaztodermic layer
- blaxtodermic layer
- bladtodermic layer
- blaetodermic layer
- blawtodermic layer
- blasrodermic layer
- blasfodermic layer
- blasgodermic layer
Etymology of BLASTODERMIC LAYER
The term "blastodermic layer" is derived from two etymological components: "blastoderm" and "layer".
1. "Blastoderm" comes from the combination of two Greek roots:
- "Blasto" derives from the Greek word "blastos", meaning "germ" or "sprout".
- "Derm" stems from "derma", which means "skin" or "layer".
2. "Layer" originates from the Old English word "leger", which refers to "a bed" or "a layer of material".
The combination of "blastoderm" and "layer" in "blastodermic layer" refers to a specific layer in an embryonic developing organism, which forms during the process of blastulation and is crucial for subsequent development.
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