A Type I Chiari malformation is a congenital anomaly of the brain in which the cerebellar tonsils are elongated and pushed down through the opening of the base of the skull (see foramen magnum), blocking the flow of cerebrospinal fluid (CSF) as it exits through the medial and lateral apertures of the fourth ventricle.he flocculonodular lobe of the cerebellum which can also be confused for the cerebellar tonsils, is one of three lobes that make up the overall composition of the cerebellum. The cerebellum consists of three anatomical and functional lobes: anterior lobe, posterior lobe, and flocculonodular lobe.
For other uses, see Silver Springs. Silver Springs is a U.S. unincorporated community and the site of aquatic springs in Marion County, Florida. The springs are one of the largest artesian spring formations in the world, producing nearly 550 million gallons of crystal-clear water daily. Silver Springs forms the headwaters of the Silver River, the largest tributary on the Ocklawaha River, a part of the St. Johns River system. The springs were designated a National Natural Landmark in 1971. One of Florida's first tourist attractions, the springs drew visitors even before the U.S. Civil War.
Discover Montgomery County. Wheaton / Silver Spring/Takoma Park. Conveniently located on the Metrorailâs Red Line, the Wheaton and Silver Spring area offers a walkable downtown atmosphere. This area is known for its diverse award-winning restaurants, large shopping centers, acclaimed cultural attractions and outdoor events.