Lenz's Law. Lenz's Law - seeing that the magnetic field induced by a current induced by a change in magnetic flux (Faraday's Law) counteracts the change in flux.
The brain is protected from injury by the skull, meninges, cerebrospinal fluid and the blood-brain barrier. In this post we will explore them all in detail, well, except for the skull since that was already discussed in other posts about the bones. The function of the meninges is to cover and protect the brain itself. It encloses and protects the vessels that supply the brain and contains CSF between the pia mater and arachnoid maters. Immediately deep to the periosteum is the periosteal and meningeal which create the dura mater. The dura mater is found all around the brain and its 2 layers separate and create spaces called dural sinuses.
The brain and spinal cord are enveloped by three membranes called the meninges which serve to protect the brain and spinal cord, help to circulate the cerebrospinal fluid, and also support the flow of blood to the brain. The three meninges are the pia mater, the arachnoid mater, and the dura mater. Not only does the spinal cord pass through the vertebral canal, it attaches to it as well. The meninges attach firmly to the skull and at the base of the spine on the tailbone. They attach loosely at four different places along the spine through fairly lax ligaments.