As you might think, bacterial infections are caused by bacteria, and viral infections are caused by viruses. Perhaps the most important distinction between bacteria and viruses is that antibiotic drugs usually kill bacteria, but they aren't effective against viruses.s you might think, bacterial infections are caused by bacteria, and viral infections are caused by viruses. Perhaps the most important distinction between bacteria and viruses is that antibiotic drugs usually kill bacteria, but they aren't effective against viruses.
What is the bump in the cortex called? The bump in the cortex is called the gyrus. It is the convex fold in the surface of the brain and surrounded by one or more sulci.
To return to the exercise , close this browser window. Sulci and Gyri on the Cerebral Hemispheres. To pack more grey matter into the limited space inside the skull, animals with big brains, especially humans, the cerebral cortex is wrinkled. The grooves that make these wrinkles are called sulci and the ridges between them are called gyri.