The correct spelling of the thin layer that surrounds the yolk of an egg is "yolk membrane." In IPA phonetic transcription, it is written as /jəʊk ˈmɛm.brən/, where the "yolk" is pronounced with a "y" sound, and "membrane" is pronounced with stress on the second syllable. The membrane is important for protecting and separating the yolk from the white in the egg, and it can also impact the quality of the egg during cooking and storage.
The yolk membrane is a vital component of an egg, specifically the protective layer surrounding the yolk. It serves as a barrier between the yolk and the albumen or egg white. The yolk membrane is an ultra-thin and translucent layer that helps secure and maintain the integrity of the yolk's content.
Composed of proteins and lipids, the yolk membrane acts as a defense mechanism, shielding the yolk from potential damage or contamination. It prevents harmful microorganisms, such as bacteria or viruses, from infiltrating the yolk and compromising its quality. Additionally, the membrane restricts the movement of water and gases, preventing any undesired exchange between the yolk and the surrounding environment.
The yolk membrane plays a crucial role in the development of an embryo during fertilization. It functions as a protective casing, safeguarding the developing embryo from external pressures and potential hazards. Furthermore, this membrane permits the passage of necessary nutrients and oxygen to the embryo, enabling healthy growth and development.
The thickness and strength of the yolk membrane may vary, depending on the species of the egg-laying organism. For instance, in avian eggs, it is relatively sturdy, providing added protection for the contents within. Conversely, in smaller or more delicate eggs, the yolk membrane may be thinner and more fragile.
Overall, the yolk membrane is an essential component of an egg, ensuring the preservation and protection of the yolk's nutritive value and acting as a barrier against external elements, playing a key role in the development of embryos in the case of fertilized eggs.
Membrana vitellina, zona pellucida.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "yolk" comes from the Old English word "geoloc", which is derived from the Old High German word "gelah", meaning "yellow". The term "membrane" originates from the Latin word "membrana", which refers to a thin layer or sheet-like structure. When combined, "yolk membrane" suggests the thin layer or membrane that surrounds the yolk of an egg.