User:Mayasaxe/sandbox

Zygoneury is defined as an arrangement of the nervous system in which the mantle nerve of the pleural ganglion runs directly to the ganglion of the visceral commissure of its own side. This condition is very common in mollusks and other types of gastropods. When this condition is present on both sides of the nervous system, it is called dialyneury. The connection is mostly present on the right side of the system, but is also sometimes present on the left side of the system. This pattern may also be present in pleurocids, but this is somewhat unclear. Zygoneury is also part of the development of these animals. Through a process called torsion, the larvae of molluscs are able to rotate all the way around. During torsion, the mantle cavity shifts, and the relative positions of various visceral organs also move around. The alimentary canal begins to loop into a “U” shape which occurs due to, and this means that there is a twist in the pleural and pallial connectivity part of the animal. The pallial nerves then connect to the intestinal ganglia and go into the mantle which causes zygoneury.; hence, zygoneury is formed. Thiaridae experience no zygoneury. Zygoneury usually takes place on the right side of the body. Torsion of the body of these animals allows for better protection of the head of the animal. This prevents the animal in question from falling over and stabilizes its center of gravity so it can balance better. Dialyneury is present in left and right contexts which. This is sometimes called bilateral zygoneury, additionally. When this is reduced, then forms indicating earlier streptoneury are reduced. Streptoneury is another name for this torsion, which is a very important force in the development of these animals. During streptoneury, the visceral connectives cross, which creates a large degree of tension between them. Some lineages of these animals do not possess zygoneury. Instead, the torsional force is decreased, and detorsion occurs, which is also called euthyneury. Supraintenstinal nerves move up from their place on the right side of the intestine area, and this comes from the right visceral nerve, the place where the visceral commissure comes from in zygoneury. The left visceral nerve becomes a different part of the animal entirely in that it becomes a subintestinal nerve. This nerve moves down the intestines and places itself to the right. Cyclophoroidians are another group that experiences this condition. These animals experience connections in two ways. They may experience zygoneury through connections between the right plural and the suboesophageal ganglia, or between the supraesophageal ganglia and the left plural ganglia. This one part of the ganglia is theorized to perhaps have a role to play in the way that neural coordination is controlled. Even though zygoneury is believed to be a way that this process of neural coordination is actually streamlined to make it more effective and easier to handle, it does not actually perfectly line up with the way that small body size is believed to lead to more compact neural organization. Smaller organisms do not necessarily experience more zygoneury. Some connections are longer in certain organisms, but that is not necessarily indicative of anything, and more examples of zygoneury within a species is not necessarily a one to one ratio with body size. It may not create a more compact organism or a more streamlined neural path. It is also important to specify how zygoneury relates to just one ganglion. Dialyneury is associated with the whole pallial nerve, which is a bundle of cells. Double-zygoneury is an additional term for this. This connection is also fairly strong.