Connecting stalk
Connecting Stalk
The Connecting Stalk (kəˈnɛktɪŋ stɔːk) is a structure in embryology that connects the developing embryo to the trophoblast, which will eventually form the placenta.
Etymology
The term "Connecting Stalk" is derived from the English words "connect" and "stalk". "Connect" comes from the Latin "conectere", meaning "to bind together", and "stalk" comes from the Old English "stalu", meaning "a support or stand".
Structure and Function
The Connecting Stalk is a slender structure that forms during the early stages of embryogenesis. It is composed of extraembryonic mesoderm and extraembryonic coelom. The Connecting Stalk serves as a conduit for the developing umbilical vessels, which provide the embryo with nutrients and oxygen from the mother's blood supply.
Related Terms
- Embryo: The early stage of development in multicellular organisms.
- Trophoblast: The outer layer of cells in the blastocyst that provide nutrients to the embryo and develop into a large part of the placenta.
- Placenta: An organ that develops in the uterus during pregnancy, providing oxygen and nutrients to the growing baby.
- Embryogenesis: The process by which the embryo forms and develops.
- Extraembryonic mesoderm: The layer of cells in the embryo that forms the structures that support the embryo, such as the placenta and umbilical cord.
- Extraembryonic coelom: The cavity or space within the extraembryonic mesoderm.
- Umbilical vessels: The blood vessels that carry blood between the embryo and the placenta.
External links
- Medical encyclopedia article on Connecting stalk
- Wikipedia's article - Connecting stalk
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