ANIMAL POLE Meaning and
Definition
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The term "animal pole" refers to a specific region or area within an embryo or an egg of an animal that is distinguished by its potential to develop into the future organism's body structures. It is primarily found in amphibians, particularly during early embryonic development.
In animals that undergo a process called radial holoblastic cleavage, such as frogs, the animal pole is located at the top of the embryo. This pole contains a higher concentration of cytoplasm and organelles, making it distinct from the vegetal pole, located opposite to it. The animal pole is characterized by having a greater density of cells compared to the rest of the embryo, as a result of asymmetric cell division during cleavage.
Moreover, the animal pole is responsible for the formation of the ectoderm layers, which will develop into various external body structures like the skin, nervous system, and sense organs. It plays a pivotal role in orchestrating the differentiation and specialization of cells during the early stages of embryogenesis.
The term "animal pole" is extensively used in the field of embryology and developmental biology to describe the distinct morphological and positional attributes of the embryo. Understanding the location and significance of the animal pole contributes to our knowledge of the complex process of embryonic development in animals.
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The point in a telolecithal egg opposite the yolk, where the protoplasm is found in the neighborhood of the germinal vesicle.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for ANIMAL POLE
- znimal pole
- snimal pole
- wnimal pole
- qnimal pole
- abimal pole
- amimal pole
- ajimal pole
- ahimal pole
- anumal pole
- anjmal pole
- ankmal pole
- anomal pole
- an9mal pole
- an8mal pole
- aninal pole
- anikal pole
- anijal pole
- animzl pole
- animsl pole
- animwl pole
Etymology of ANIMAL POLE
The word "animal" originates from the Latin word "animalis", which means "living being" or "animal". It is derived from the Latin word "anima", meaning "soul" or "breath of life". This term was then borrowed into English in the late 14th century.
The word "pole" has a separate origin, coming from the Old English word "pol", meaning "a long, slender piece of wood or metal". It can be traced back to the Proto-Germanic word "pulaz" and the Proto-Indo-European root "pol-", which means "a stake" or "a tree trunk".
When these two words are combined, "animal pole" refers to the area or region of an egg or embryo that will eventually give rise to the animal, while the opposite end is known as the "vegetal pole", which will develop into the plant structures.
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