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.
Science Main Index. The cerebral cortex is the outer layer of the cerebrum section of the brain. It is approximately 2 millimeters thick, covering the entire surface of the cerebral hemispheres. It is often called the gray matter of the brain.Read on to learn more about the cerebral cortex, what it is, and what it does in your body.he cerebral cortex is the outer layer of the cerebrum section of the brain. It is approximately 2 millimeters thick, covering the entire surface of the cerebral hemispheres.