MEMBRANA SUBZONALIS Meaning and
Definition
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Membrana subzonalis, also known as the subzonal membrane, refers to a specialized structure found in the oocyte, particularly in mammalian eggs. It is a thin, delicately constructed membrane that lies immediately beneath the zona pellucida, which is the outer layer surrounding the oocyte or egg cell. The membrana subzonalis is present in the area where the oocyte's microvilli attach to the zona pellucida.
The primary function of the membrana subzonalis is to prevent polyspermy, the fertilization of an egg by more than one sperm. It acts as a barrier that restricts the entry of additional sperm into the oocyte after the initial penetration of the zona pellucida by a single sperm. This ensures that only one sperm successfully fertilizes the egg, preventing any potential genetic abnormalities or disruptions in the development of the resulting embryo.
The membrana subzonalis is made up of a complex array of proteins, including glycoproteins, proteoglycans, and other extracellular matrix components. These proteins provide structural integrity to the subzonal membrane and contribute to its selective permeability.
Overall, the membrana subzonalis plays a crucial role in the process of fertilization by controlling sperm entry into the oocyte and maintaining the integrity of the ensuing embryo. Its presence and function are essential for successful reproduction in mammals.
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A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for MEMBRANA SUBZONALIS
- nembrana subzonalis
- kembrana subzonalis
- jembrana subzonalis
- mwmbrana subzonalis
- msmbrana subzonalis
- mdmbrana subzonalis
- mrmbrana subzonalis
- m4mbrana subzonalis
- m3mbrana subzonalis
- menbrana subzonalis
- mekbrana subzonalis
- mejbrana subzonalis
- memvrana subzonalis
- memnrana subzonalis
- memhrana subzonalis
- memgrana subzonalis
- membeana subzonalis
- membdana subzonalis
- membfana subzonalis
- membtana subzonalis
Etymology of MEMBRANA SUBZONALIS
The word "membrana subzonalis" is a Latin phrase that refers to a structure found in embryology. To understand its etymology, we can break down the individual components:
1. Membrana: In Latin, "membrana" translates to "membrane" in English. It refers to a thin, pliable layer or sheet-like structure.
2. Subzonalis: This word can be broken down further into two components:
- Sub: In Latin, "sub" means "below" or "under". It denotes a position or location beneath or lower than something else.
- Zonalis: "Zonalis" comes from the Latin word "zona" meaning "belt" or "zone". In this context, it implies a specific zone or region.
