The correct spelling of the word "vitellary membrane" is a challenging one. It involves the use of multiple consonants like "t," "l," and "r" in a sequence that can be tricky for spellers. In terms of pronunciation, the word is divided into three syllables with the accent on the second syllable. The phonetic transcription in IPA for "vitellary membrane" is /vɪtəlɛri mɛmbrən/. Overall, mastering the spelling and pronunciation of the word "vitellary membrane" requires patience and practice.
The term "vitellary membrane" refers to a structure that is commonly found in eggs, especially in those of animals. It is a thin, transparent, and elastic membrane that surrounds the yolk or vitellus, which is the significant source of nutrients for the developing embryo. The vitellary membrane separates the yolk from the albumen, commonly known as egg white.
The function of the vitellary membrane is to protect the yolk from external threats and maintain its hygienic environment. It acts as a barrier that strengthens the structure of the egg and prevents the entry of microorganisms, bacteria, and other potential contaminants, reducing the risk of infection.
Moreover, the vitellary membrane also facilitates the exchange of gases, allowing oxygen to enter the egg while enabling the release of waste gases such as carbon dioxide. This exchange is vital for the respiration and growth of the developing embryo.
In some animal species, the vitellary membrane is not present or is very thin, and the nutrients are distributed differently. However, in most avian and reptilian eggs, the vitellary membrane is reasonably prominent. It provides essential protection to the yolk until the time of hatching.
Overall, the vitellary membrane plays a critical role in safeguarding and supporting the development of the embryo by consolidating the yolk and maintaining its integrity throughout the incubation period.
Zona pellucida.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "vitellary" originated from the Latin word "vitellus", which means yolk. The term "vitellary" refers to something related to the yolk or yolk sac.
The term "membrane" has its roots in the Latin word "membrana", which means thin skin or layer. It signifies a flexible layer that separates or covers different parts or compartments of an organism.
Therefore, the etymology of the word "vitellary membrane" combines the Latin word "vitellus" (yolk) and the Latin word "membrana" (membrane), to describe a thin layer or skin related to the yolk or yolk sac.