GERMINAL POLE Meaning and
Definition
-
The germinal pole refers to a specific area present in the fertilized egg of an animal, particularly birds and reptiles. It is the region of the egg where embryonic development initiates. The term "germinal" signifies the involvement of this pole in the successful germination or growth of the offspring.
In an avian or reptilian egg, the germinal pole is usually located at the top surface of the yolk or egg yolk, opposite to the air sac. It is the area where the embryo begins to form and differentiate into various cell types, ultimately leading to the development of an organism.
During fertilization, the sperm penetrates the egg, causing the formation of a blastodisc, a small disc-like structure that later transforms into the blastoderm. The blastoderm then further develops into the embryo. The entire process takes place at the germinal pole, where vital cellular activity occurs, including cell division, gastrulation, and morphogenesis.
The germinal pole is of utmost significance as it establishes the primary axis of the developing organism, determining its future orientation and structure. Within the germinal pole, the nucleus undergoes significant reorganization and plays a pivotal role in the transmission of genetic material from one generation to the next.
In summary, the germinal pole in avian and reptilian eggs is the specialized region where crucial embryonic development begins. It is responsible for the initiation and formation of the organism, playing a fundamental role in the establishment of the body structure, axis, and transmission of genetic information.
-
The part of an ovum where the nucleus lies.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for GERMINAL POLE
- ferminal pole
- verminal pole
- berminal pole
- herminal pole
- yerminal pole
- terminal pole
- gwrminal pole
- gsrminal pole
- gdrminal pole
- grrminal pole
- g4rminal pole
- g3rminal pole
- geeminal pole
- gedminal pole
- gefminal pole
- getminal pole
- ge5minal pole
- ge4minal pole
- gerninal pole
- gerkinal pole
Etymology of GERMINAL POLE
The word "germinal" comes from the Latin word "germen", meaning "seed" or "sprout". It is derived from the verb "gero", which means "to bear" or "to carry". The term "germinal pole" is used in embryology to refer to the area of an egg cell where growth and development begin. The word "pole" refers to a point of reference or axis. Therefore, "germinal pole" essentially means the point or region from where the growth or development of an organism originates. It is worth noting that "germinal pole" is primarily used in the context of embryology and is not commonly used in general language.
Infographic
Add the infographic to your website:
