BLASTODISC Meaning and
Definition
-
A blastodisc refers to a crucial embryonic structure found in the early development of oviparous animals, particularly birds, reptiles, and some fish. It is a round, disc-shaped cluster of cells that exists on the surface of the yolk within the egg. The blastodisc plays a pivotal role in the formation of the zygote, which eventually develops into the embryo.
During fertilization, the male gamete, or sperm, enters the ovum, or egg cell, and undergoes fusion with the female gamete, or haploid nucleus. This results in the formation of a new diploid nucleus, marking the onset of embryogenesis. At this stage, the blastodisc appears as a small, translucent area on the surface of the yolk, characterized by a high concentration of cytoplasm. It contains the germinal disc, where future cellular divisions and differentiation will occur, giving rise to the various tissues and organs of the developing organism.
The blastodisc is of utmost significance as it determines the positioning and arrangement of tissues during gastrulation, a subsequent phase of embryonic development. This process involves the formation of three primary germ layers - ectoderm, mesoderm, and endoderm - which eventually give rise to the different organ systems of the embryo. Thus, the blastodisc acts as a foundation for establishing the basic body plan of the developing organism.
Overall, the blastodisc, with its specialized cells and its pivotal role in early embryonic development, is a critical structure that lays the groundwork for the formation of new life in oviparous animals.
-
A collection of protoplasm at one pole of the impregnated ovum.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for BLASTODISC
- vlastodisc
- nlastodisc
- hlastodisc
- glastodisc
- bkastodisc
- bpastodisc
- boastodisc
- blzstodisc
- blsstodisc
- blwstodisc
- blqstodisc
- blaatodisc
- blaztodisc
- blaxtodisc
- bladtodisc
- blaetodisc
- blawtodisc
- blasrodisc
- blasfodisc
Etymology of BLASTODISC
The word "blastodisc" is formed from two parts: "blasto" and "disc".
The term "blasto" is derived from the Greek word "blastos", which means "germ" or "sprout". It is often used in biological contexts to refer to an early stage of development, particularly during embryonic development.
The second part, "disc", refers to a flat, circular structure. It comes from the Latin word "discus", which also means "disk" or "plate".
Therefore, the word "blastodisc" can be understood as a combination of "blastos" (germ) and "disc" (flat structure), referring to a flattened, circular area of a developing embryo.
Similar spelling words for BLASTODISC
- blastocele,
- blastocytoma,
- blastocyst,
- blastomycete,
- blackstock,
- blastodiaceae,
- blastodermic,
- blastemic,
- blastomyces,
- blastogenesis,
- blastocyte,
- blastoma,
- blastomycotic,
- blastomycosis,
- blasting cap,
- blastomere,
- blastomeric,
- blackston,
- blasted,
- blasting,
- blastocoel,
- blastocoelic,
- blastocladia,
- blastoff,
- blastoporic,
- blastoderm,
- blastopore,
- blastocoele.
Infographic
Add the infographic to your website:
