Tell me every part of the body that protects the brain according to it's layers
The brain is protected by several layers, including:
1. Scalp: The scalp is the outermost layer that covers the skull and provides a protective covering for the underlying structures.
2. Skull: The skull is the bony structure that encloses and protects the brain from external trauma.
3. Meninges: There are three layers of meninges that surround and protect the brain. These layers are:
a. Dura mater: The outermost and toughest layer of meninges.
b. Arachnoid mater: The middle layer that acts as a cushioning layer.
c. Pia mater: The innermost delicate layer that is in direct contact with the brain.
4. Cerebrospinal fluid (CSF): CSF is a clear fluid that surrounds and cushions the brain and spinal cord. It acts as a shock absorber, protecting the brain from impact.
5. Blood-brain barrier (BBB): The BBB is a highly selective semipermeable membrane that separates the bloodstream from the brain tissue. It helps regulate the substances entering the brain and protects it from harmful substances.
6. Cerebral vasculature: The blood vessels (arteries and veins) supplying blood to the brain are well protected and have mechanisms to regulate blood flow and prevent damage.
It's important to note that these structures work together to ensure the brain's protection and proper functioning.