The spelling of "Vena Paraumbilicalis," which refers to a vein that runs through the umbilicus, can be a bit tricky. In IPA phonetic transcription, it is pronounced /veɪnə pærəʌmbɪlɪkəlɪs/. The "v" sound is pronounced as a voiced labiodental fricative, and the "a" sounds in both "para" and "umbilicalis" are pronounced as a short "a" sound. The "b" in "paraumbilicalis" is pronounced as a voiced bilabial plosive, followed by a schwa sound in the middle of the word.
Vena Paraumbilicalis, also known as the paraumbilical vein or the umbilical vein, is a term used in anatomy to describe a specific blood vessel. It is a vein that is formed before birth and is located in the region of the umbilicus, commonly referred to as the belly button or navel.
The Vena Paraumbilicalis is a continuation of the left branch of the portal vein, which is the primary blood vessel that carries nutrient-rich blood from various organs of the digestive system to the liver. It travels within the umbilical cord and connects the placenta to the developing fetus during gestation.
In the fetal circulation, the Vena Paraumbilicalis plays a crucial role in carrying oxygenated and nutrient-rich blood from the placenta to the developing fetus. This blood bypasses the liver by entering the liver through the ductus venosus, an opening that allows blood to shunt directly into the inferior vena cava, a large vein that returns deoxygenated blood to the heart.
After birth, the Vena Paraumbilicalis undergoes functional changes. It typically collapses and closes, becoming a remnant known as the ligamentum teres hepatis or the round ligament of the liver. The main function of this remnant is to provide support and stability for the liver.
In summary, the Vena Paraumbilicalis is a blood vessel that connects the placenta to the developing fetus during fetal development. It carries oxygenated and nutrient-rich blood and undergoes changes after birth to become a stabilizing structure within the liver.
The word "Vena Paraumbilicalis" has Latin origins.
"Vena" means "vein" in Latin, while "Para" means "parallel to" or "alongside", and "umbilicalis" means "related to the navel" or "umbilical".
Thus, "Vena Paraumbilicalis" refers to the vein that runs parallel to or alongside the umbilicus or belly button.