The most common route of central nervous system invasion by pathogens is through
A) the gastrointestinal system.
B) the circulatory system.
C) the skin.
D) direct penetration into nerves.
E) the parenteral route.

Question

Quizplus · Accepted Answer

The circulatory system is the most common route of central nervous system invasion by pathogens because it provides easy access to the brain through the blood-brain barrier. Pathogens that infect other parts of the body can easily travel through the circulatory system and reach the brain. This is why many infections, such as meningitis, are often accompanied by symptoms such as fever, headache, and neck stiffness, as the body's immune system responds to the invasion of pathogens.

The Most Common Route of Central Nervous System Invasion by Pathogens