Question

whats protect my brain from injury ?​

Answer 1

Answer:

Your brain is a delicate organ that needs all the protection it can get. That thick skull of yours is its first line of defense (being bone headed is a good thing!), followed by three sturdy membranes called meninges. Fluid fills the gaps between these membranes, cushioning the brain from impacts. A special"blood-brain barrier" made of special cells acts like a security perimeter in the brain's circulatory system, and keeps out anything that might contaminate your sensitive network of neurons.