vena umbilicalis
Học thuậtThân thiện
A diagram shows the vena umbilicalis within a cross-section of an umbilical cord.
Definition
- Noun:
- A vein in the umbilical cord: The
vena umbilicalisis a specific blood vessel. It is the vein within the umbilical cord that carries oxygenated, nutrient-rich blood from the placenta to the developing fetus.
Usage Notes
- The term is a formal, anatomical term used primarily in medical and biological contexts.
- In modern clinical English, it is more commonly referred to as the umbilical vein. is its Latin-derived scientific name.
- It is a singular noun. Its primary function is fetal circulation.
Examples of Usage
- Noun:
- The
vena umbilicalisis a critical component of the fetal circulatory system. - Oxygenated blood is transported via the
vena umbilicalisfrom the placenta to the fetus.
Advanced Usage
- Embryonic Development: After birth, the closes off and becomes a fibrous cord known as the ligamentum teres hepatis (round ligament of the liver).
- Following delivery, the
vena umbilicalisundergoes physiological closure.
Variants and Related Words
- Umbilical vein (n): The common English term for .
- Umbilical cord (n): The structure containing the and umbilical arteries.
- Placenta (n): The organ from which the receives blood.
- Fetal circulation (n): The system in which the plays a key role.
Synonyms
- Umbilical vein: The direct and most frequently used synonym in non-specialist medical language.
Antonyms / Contrasting Terms
- Umbilical arteries (n): The two arteries within the umbilical cord that carry deoxygenated blood the fetus the placenta. They perform the opposite function of the .
A diagram shows the vena umbilicalis within a cross-section of an umbilical cord.
Noun
- a vein in the umbilical cord; returns nutrient blood from the placenta to the fetus