PATHOLOGY

Detailed explanation-1: -Brain tissue is soft and delicate, and requires protection. In addition to the protection provided by the skull, the brain is surrounded by: the connective tissue membranes, or meninges; the dura mater; the arachnoid layer; and the pia mater.

Detailed explanation-2: -Three layers of membranes known as meninges protect the brain and spinal cord. The delicate inner layer is the pia mater. The middle layer is the arachnoid, a web-like structure filled with fluid that cushions the brain. The tough outer layer is called the dura mater.

Detailed explanation-3: -The brain is very delicate and is well protected by the skull. It is surrounded by a fluid called cerebrospinal fluid (CSF).

Detailed explanation-4: -The skull protects the brain and forms the shape of the face.