Development
The fourth ventricle, similarly to other parts of the ventricular system of the brain, develops from the central canal of the neural tube. Specifically, the fourth ventricle originates from the portion of the tube that is present in the developing rhombencephalon. During the first trimester of pregnancy central canal expands into lateral, third and fourth ventricles, connected by thinner channels. In lateral ventricles specialized areas- choroid plexuses appear, which produce cerebrospinal fluid. If its production is bigger than resorption or its circulation is blocked- the enlargement of the ventricles may appear and cause a hydrocephalus. Fetal lateral ventricles may be diagnosed using linear or planar measurements. See also Dandy-Walker syndrome.
Read more about this topic: Fourth Ventricle
Famous quotes containing the word development:
“Understanding child development takes the emphasis away from the child’s character—looking at the child as good or bad. The emphasis is put on behavior as communication. Discipline is thus seen as problem-solving. The child is helped to learn a more acceptable manner of communication.”
—Ellen Galinsky (20th century)
“Men are only as good as their technical development allows them to be.”
—George Orwell (1903–1950)
“I do seriously believe that if we can measure among the States the benefits resulting from the preservation of the Union, the rebellious States have the larger share. It destroyed an institution that was their destruction. It opened the way for a commercial life that, if they will only embrace it and face the light, means to them a development that shall rival the best attainments of the greatest of our States.”
—Benjamin Harrison (1833–1901)