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.
The cerebral cortex is one and a half to five millimetres thick. It is the layer of the brain often called âgray matterâ. It is called gray as the nerves in this area donât have the insulation that makes most other parts of the brain look white.The cerebral cortex covers the outer part of the cerebrum and cerebellum. The cerebral cortex is made up of folded bulges that are called gyri. These gyri create furrows called sulci.t is called gray as the nerves in this area donât have the insulation that makes most other parts of the brain look white. The cerebral cortex covers the outer part of the cerebrum and cerebellum. The cerebral cortex is made up of folded bulges that are called gyri.