Meningiomas are named according to their location (Fig 1) and cause various symptoms: 1  Convexity meningiomas: grow on the surface of the brain. They may not produce symptoms until they reach a large size. 2  Falx and parasagittal meningiomas: grow from the dura fold that runs between the left and right sides of the brain.
Tectum | Tegmentum | See also. The midbrain, or mesencephalon is made up of two main structures and surrounds the cerebral aqueduct.he midbrain, or mesencephalon is made up of two main structures and surrounds the cerebral aqueduct.
The urinary system is made up of the kidneys, ureters, urethra and bladder. Also known as: Hyaline casts, Granular casts, Renal tubular epithelial casts, Waxy casts, Casts in the urine, Fatty casts, Red blood cell casts or White blood cell casts.rinary casts may be made up of white blood cells, red blood cells, kidney cells, or substances such as protein or fat. The content of a cast can tell your health care provider whether your urine is healthy or abnormal.