Final answer:
There are three layers of connective tissue called meninges that separate the cranium and the brain. These layers are the dura mater, arachnoid mater, and pia mater.
Step-by-step explanation:
The cranium and the brain are separated by three layers of connective tissue called meninges.
These layers are the dura mater, arachnoid mater, and pia mater.
The dura mater is a thick fibrous layer that serves as a protective sheath over the brain and spinal cord.
The arachnoid mater is a membrane of thin fibrous tissue that forms a loose sac around the brain, and beneath it is a thin filamentous mesh called the arachnoid trabeculae.
Finally, the pia mater is a thin fibrous membrane that directly contacts and covers the brain.