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.
Both the cerebrum and cerebral cortex come under the forebrain. Cerebrum. Cerebrum is the largest and most prominent part of the human brain. It appears to envelop the rest of the brain as it constitutes 4/5 of its weight.he nervous system is important to control and coordinate all the actions of an organism and transmit signals between different parts of the body. The system is basically made up of specialized cells called neurons. The complexity of the nervous system increases with the complexity of the body of organisms.