Perivitelline space
Perivitelline Space
The Perivitelline Space (Pronunciation: Peri-vi-telline Space) is a significant component of the oocyte structure in many species, including humans.
Etymology
The term "Perivitelline" is derived from the Latin words "peri" meaning around or surrounding, and "vitellus" which refers to the yolk of an egg. The term "space" is used to denote the gap or area between the oocyte and the zona pellucida.
Definition
The Perivitelline Space is the region located between the oocyte membrane, also known as the oolemma, and the zona pellucida. This space is filled with a fluid matrix that plays a crucial role in the fertilization process.
Function
The primary function of the Perivitelline Space is to facilitate the movement and positioning of the spermatozoon during the process of fertilization. It also serves as a barrier to prevent multiple sperm from fertilizing a single oocyte, a phenomenon known as polyspermy.
Related Terms
- Oocyte: The female germ cell involved in reproduction.
- Zona Pellucida: The glycoprotein layer surrounding the plasma membrane of mammalian oocytes.
- Oolemma: The cell membrane surrounding an oocyte.
- Spermatozoon: The male reproductive cell, or sperm.
- Fertilization: The process of combining the male gamete, or sperm, with the female gamete, or oocyte.
- Polyspermy: The fertilization of an egg by more than one sperm.
External links
- Medical encyclopedia article on Perivitelline space
- Wikipedia's article - Perivitelline space
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