What does «cordón nervioso ventral» mean in Spanish?
- The ventral nerve cord constitutes a part of the central nervous system of some bilaterian phyla (bilateral symmetry), particularly within nematodes, annelids and arthropods. It generally consists of the anterior segmental ganglia with the nerve cords running down the ventral ("belly", as opposed to posterior) plane of the organism. The ventral nerve cords from anterior to posterior (the thoracic and abdominal tagma in arthropods) are formed by segmental ganglia that are connected by a tract of nerve fibers passing from one side of the nerve cord to the other called commissures. The entire system bears some resemblance to a rope ladder. In some animals, bilateral ganglia merge into a single large ganglion per segment.