NUCLEAR MEMBRANE Meaning and
Definition
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The nuclear membrane, also known as the nuclear envelope, is a double-layered lipid bilayer membrane that surrounds the nucleus of eukaryotic cells. It serves as a selective barrier and protective boundary, separating the contents of the nucleus from the cytoplasm.
The nuclear membrane consists of an inner and outer membrane, each made up of phospholipids. The two membranes are separated by a space called the perinuclear space. The nuclear pores, which are protein-lined channels, are scattered throughout the nuclear membrane and allow selective transport of molecules between the nucleus and the cytoplasm. These pores regulate the movement of ions, small molecules, and large molecules such as RNA and proteins into and out of the nucleus.
The nuclear membrane plays a crucial role in maintaining the integrity and organization of the nucleus. It helps in segregating the genetic material, including DNA and RNA, within the nucleus and prevents their mixing with the cytoplasmic components. It also provides support and structural stability to the nucleus
During cell division, the nuclear membrane breaks down to allow the chromosomes to separate and distribute equally to the daughter cells. Following cell division, the nuclear membrane reforms around each newly formed nucleus.
Overall, the nuclear membrane is a crucial component of the eukaryotic cell's internal organization, providing a protective barrier while allowing selective communication and transport between the nucleus and the cytoplasm.
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The outer layer of the nucleoplasm.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for NUCLEAR MEMBRANE
- buclear membrane
- muclear membrane
- juclear membrane
- huclear membrane
- nyclear membrane
- nhclear membrane
- njclear membrane
- niclear membrane
- n8clear membrane
- n7clear membrane
- nuxlear membrane
- nuvlear membrane
- nuflear membrane
- nudlear membrane
- nuckear membrane
- nucpear membrane
- nucoear membrane
- nuclwar membrane
- nuclsar membrane
- nucldar membrane
Etymology of NUCLEAR MEMBRANE
The word "nuclear" in the term "nuclear membrane" is derived from the Latin word "nucleus", which means "kernel" or "central part". In this context, it refers to the central part of a cell, specifically the cell nucleus. The term "membrane" comes from the Latin word membrana, meaning "skin" or "covering". Therefore, the etymology of "nuclear membrane" suggests a protective layer surrounding the nucleus of a cell.
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