UMBILICAL VESICLE Meaning and
Definition
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An umbilical vesicle, also known as the yolk sac, is a membranous structure found in the early stages of development in certain animals, including humans. It acts as a vital connection between the developing embryo and the yolk sac, providing nourishment and assisting in the development of the embryo.
During embryonic development, the umbilical vesicle forms from an outgrowth of the endoderm, the innermost layer of the developing embryo. It is attached to the developing embryo via the yolk stalk, which contains blood vessels that transport nutrients from the yolk sac to the embryo. The umbilical vesicle plays a crucial role in the early nourishment of the embryo, as it contains yolk proteins and lipids that provide essential nutrients for growth.
As the embryo develops, the umbilical vesicle gradually decreases in size and importance. Eventually, it is incorporated into the developing digestive system, contributing to the formation of structures like the gastrointestinal tract and liver. In humans, the umbilical vesicle is virtually absent by the end of the first trimester, as it is largely replaced by the placenta, which takes over the role of providing nutrients and oxygen to the developing fetus.
In summary, the umbilical vesicle is a temporary structure that serves as a connection between the developing embryo and the yolk sac, providing nourishment and supporting early development.
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• The portion of the yolksac in the embryo which is outside the body cavity, communicating with it at the umbilicus through the omphalomesenteric duct.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for UMBILICAL VESICLE
- ymbilical vesicle
- hmbilical vesicle
- jmbilical vesicle
- imbilical vesicle
- 8mbilical vesicle
- 7mbilical vesicle
- unbilical vesicle
- ukbilical vesicle
- ujbilical vesicle
- umvilical vesicle
- umnilical vesicle
- umhilical vesicle
- umgilical vesicle
- umbulical vesicle
- umbjlical vesicle
- umbklical vesicle
- umbolical vesicle
- umb9lical vesicle
- umb8lical vesicle
Etymology of UMBILICAL VESICLE
The term "umbilical vesicle" is derived from Latin and Greek roots.
The word "umbilical" comes from the Latin word "umbilicus", which means navel or belly button. The Latin term is a diminutive of "umbō", meaning bump or knob.
The word "vesicle" is derived from the Latin word "vesicula", which means a small bladder or sac. The Latin term is a diminutive of "vesica", meaning bladder or cyst.
Therefore, the term "umbilical vesicle" refers to a sac-like structure connected to the embryo through the umbilical cord, which is involved in early embryonic development and provides nourishment to the developing fetus.
Similar spelling words for UMBILICAL VESICLE
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