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 Body of a Fungus Fungi exist mainly in the form of slender filaments, barelyvisible to the naked eye, which are called hyphae (singular, hypha). These hyphae are typically made up of long chainsof cells joined end-to-end divided by cross-walls called septa (singular, septum).he cell walls of plants are made ofcellulose, also a strong building material. 5. Fungi have nuclear mitosis. Mitosis in fungi isdifferent from that in plants or most other eukaryotesin one key respect: the nuclear envelope does notbreak down and re-form.