Portal commissura is a medical term that refers to a small connection between the portal vein and the hepatic veins in the liver. The spelling of this word can be explained using the International Phonetic Alphabet (IPA) as pɔːtəl kəˈmɪʃərə. The first syllable, "port", is pronounced with an open-mid back unrounded vowel, while the second syllable, "al", has a schwa sound. The final syllable, "commissura", is pronounced with a stress on the second syllable and a "sh" sound for the "ss".
Portal commissura refers to a biological structure found in the central nervous system, particularly in the brain. The term "portal" suggests a connection or passage, while "commissura" indicates a merging or joining together. Combining these terms, the portal commissura can be defined as a junction or link between different regions, particularly in the brain, which allows for the exchange of information and communication between these areas.
This structure acts as a connection point between two distinct anatomical or functional regions within the brain. It serves as a crossing point, allowing nerve fibers or axons from one region to pass through or connect with those from another region. The portal commissura facilitates the transmission of signals, coordinating and integrating information between these interconnected areas, thereby promoting efficient communication and functioning.
The precise location of the portal commissura can vary depending on the specific brain region being referred to. Examples of brain areas where portal commissura are known to exist include the cerebral cortex, thalamus, hypothalamus, and various white matter tracts. In some cases, the portal commissura may be involved in regulating processes such as sensory perception, motor coordination, or even higher cognitive functions.
Overall, the portal commissura plays a crucial role in the integrated functioning of the brain. By providing a pathway for communication between different regions, it contributes to the overall coordination and efficiency of neural processing.
C. Anterior alba.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "portal commissura" does not have a specific etymology as it is a Latin term that consists of two separate words.
"Portal" comes from the Latin word "porta", which means "door" or "gate". In medical terminology, "portal" usually refers to a vein or vessel that carries blood towards a specific organ. The term is often used to describe the portal vein, which is a major blood vessel that carries nutrient-rich blood from the intestines to the liver.
"Commissura" is derived from the Latin word "commissus", which means "united" or "joined". In anatomy, "commissura" signifies a point of connection or a union between two structures or parts. It is commonly used to describe structures in the brain or nerves that connect different regions or hemispheres.