MEDICAL PHYSIOLOGY

Detailed explanation-1: -The subarachnoid space is between the arachnoid mater and the pia mater. Here, cerebrospinal fluid (CSF) provides extra cushioning and protection for your spinal cord.

Detailed explanation-2: -Both the spinal cord and the brain are surrounded by three layers/membranes called meninges, which further protect these structures from injury. These membranes also contain a fluid between them called cerebrospinal fluid that acts as a shock absorber protecting the structures from mechanical shock.

Detailed explanation-3: -The vertebrae (back bones) of the spine include the cervical spine (C1-C7), thoracic spine (T1-T12), lumbar spine (L1-L5), sacral spine (S1-S5), and the tailbone. Each vertebra is separated by a disc. The vertebrae surround and protect the spinal cord.

Detailed explanation-4: -Both the brain and the spinal cord are protected by bone: the brain by the bones of the skull, and the spinal cord by vertebrae, a set of ring-shaped bones. They’re both cushioned by layers of membranes (called meninges) and cerebrospinal fluid.