Fissure filling is a treatment that improves the apparent clarity of a gemstone by removing air and replacing it with a substance that has a refractive index similar to the host material. Many different substances may be used to fill fissures: oils, resins, waxes, glass, and various polymers, to name a few.
Cerebral autoregulation is a process in mammals, which aims to maintain adequate and stable cerebral blood flow.hile most systems of the body show some degree of autoregulation, the brain is very sensitive to over-and underperfusion. Cerebral autoregulation plays an important role in maintaining an appropriate blood flow to that region.
Brain Stem. The brain stem is below the cerebrum and in front of the cerebellum. It connects the brain to your spinal cord. This part of the brain controls the functions your body needs in order to stay alive and it is in charge of things that happen automatically.he cerebellum is a lot smaller than the cerebrum and sits at the back of the brain. It's very important because it controls balance, movement and the way your muscles work together. It allows you to stand on your feet without falling down or lets you balance your weight on a surfâ or snowboard.