Our central nervous system is actually very strong in resisting the attack of pathogenic germs that cause brain infections. However, this area can also be very vulnerable when germs finally manage to penetrate their defense mechanisms and infection begins. The central nervous system consists of the brain, spinal cord, and optic nerve which control the thought processes, movements, and sensations throughout the body. Your central nervous system is protected by the skull, spine, meninges (membranes of the brain), and filtering the blood brain barrier (blood brain barrier) in charge of blocking certain substances from being carried into the brain tissue or spine, causing brain infections. However, the central nervous system actually does not have enough antibodies to fight germs and prevent brain infections, compared to other areas of your body. This is why once pathogenic germs (disease-causing microorganisms such as bacteria, viruses, parasites, or fungi) manage to penetrate the def...