Condenser Diaphragm-This diaphragm controls the amount of light entering the lens system. This feature is useful for viewing unstained biological specimens that are translucent. Reducing the amount of light improves contrast, making the specimen stand out against the background.
Sciatica occurs when the sciatic nerve is pinched, irritated or injured. Inflammation, arthritis or a displaced disk in the lower spine are often to blame. Doctors commonly treat sciatica with epidural injections into the spine.(The word âepiduralâ refers to a particular area in the spine.) The injections contain a steroid, which reduces inflammation. The injections can also contain a long-lasting painkiller.The different causes of sciatica may be one reason that studies come to different conclusions.The word âepiduralâ refers to a particular area in the spine.) The injections contain a steroid, which reduces inflammation. The injections can also contain a long-lasting painkiller. The different causes of sciatica may be one reason that studies come to different conclusions.
Addressing Sciatic Nerve Pain. Sciatic nerve pain is another common problem, and it can be quite excruciating. Sciatica results when your sciatic nerve gets pinched in your lower back. The pain is typically felt as originating in your buttock, radiating down your thigh. Stretching exercises can help reduce sciatic pain. Your sciatic nerve runs through your piriformis, a muscle located deep in your glutes. If the piriformis gets too tight, it can impinge the sciatic nerve, causing pain, tingling, and numbness in your leg.