BLASTOSPHERE Meaning and
Definition
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The term "blastosphere" refers to a stage in the early embryonic development of certain animals, including mammals and some invertebrates. It is a hollow sphere composed of cells called blastomeres, which are formed by repeated divisions of the fertilized egg, or zygote.
During the process of embryogenesis, the blastosphere stage typically follows the formation of the morula, a solid mass of cells. The blastosphere arises as these cells continue to divide and rearrange themselves into a hollow sphere, with a fluid-filled cavity called the blastocoel in the center. The outer layer of cells, known as the trophoblast, will eventually give rise to the placenta, while the inner cell mass will differentiate into the various tissues and organs of the developing organism.
In mammals, including humans, the blastosphere stage occurs around four to six days after fertilization. It is a critical step in the formation of an embryo, as it marks the beginning of cellular differentiation and subsequent development. The blastosphere will eventually undergo further transformation and specialization, leading to the formation of a more complex structure known as the gastrula.
The term "blastosphere" is derived from the Greek words "blastos" meaning 'bud' or 'germ' and "sphaira" meaning 'sphere'. It serves as a key developmental milestone, representing the transition from a solid mass of cells to a hollow structure, and ultimately serves as the foundation for the next stages of embryonic development.
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Blastodermic vesicle, blastula.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for BLASTOSPHERE
- vlastosphere
- nlastosphere
- hlastosphere
- glastosphere
- bkastosphere
- bpastosphere
- boastosphere
- blzstosphere
- blsstosphere
- blwstosphere
- blqstosphere
- blaatosphere
- blaztosphere
- blaxtosphere
- bladtosphere
- blaetosphere
- blawtosphere
- blasrosphere
- blasfosphere
Etymology of BLASTOSPHERE
The word "blastosphere" is derived from two Greek roots: "blastos" and "sphaira".
1. "Blastos" (βλαστός) means "germ" or "bud" in Greek. It is related to the verb "blastos" (βλάστησ) which means "to bud" or "to sprout". This root is often used in biological terms related to the early stages of development.
2. "Sphaira" (σφαῖρα) means "sphere" in Greek. It refers to a three-dimensional geometrical object with all points on its surface equidistant from the center, giving it a round shape.
Combining these roots, "blastosphere" refers to the hollow sphere-like structure that forms during embryonic development in certain animals, such as early-stage embryos of mammals or birds.
Similar spelling words for BLASTOSPHERE
- blastocyte,
- blastocoel,
- blastocoele,
- blastospheric,
- blastomere,
- blastomyces,
- blastomeric,
- blastopore,
- blastomycete,
- blastocoelic,
- blastoderm,
- blastomycosis,
- blastodermic,
- Blackstone,
- blastocele,
- blue stone,
- blastocytoma.
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