Definition of opacity for English Language Learners. : 1  the quality of a material that does not allow light to pass through it : the quality of being opaque. : 2  the quality of being difficult to understand or explain.
Research has shown that this is not true, and that brain cells can and do regenerate, especially in the areas related to learning, decision-making, visual recognition, and the way people perceive objects in space.weet. For a long time, scientists thought that it was impossible for brain cells to regenerate because they assumed that any new cells would disrupt the order of the brain.
Top 10 amazing movie makeup transformations. The cerebellum, Latin for little brain , is a plum-sized portion of the brain located below the cerebral hemispheres and behind the brain stem. It's main claim to fame is that it contains half the neurons of the brain despite being only 10% of its size.This is because its main constituents are tiny granule cells.op 10 amazing movie makeup transformations. The cerebellum, Latin for little brain , is a plum-sized portion of the brain located below the cerebral hemispheres and behind the brain stem. It's main claim to fame is that it contains half the neurons of the brain despite being only 10% of its size.