GENERAL HISTOLOGY

Detailed explanation-1: -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-2: -Your pia mater, the innermost layer, is a thin layer that’s held tightly-like shrink wrap-to the surface of your brain and spinal cord. Many blood vessels pass through this layer to supply your brain tissue with blood.

Detailed explanation-3: -Blood Supply and Lymphatics The dura mater receives vascular supply from the following branches: Internal carotid artery. Maxillary artery. Ascending pharyngeal artery.

Detailed explanation-4: -The dura mater is a dense connective tissue layer that is adherent to the inner surface of the skull. Next is the arachnoid mater that is a thin impermeable layer, and the innermost is the pia mater, which is a vascular layer that closely invests over the brain and spinal cord.

Detailed explanation-5: -Arachnoid mater. The cranial arachnoid mater is a spiderweb-like meningeal layer, interposed between the dura and pia. The potential space between the arachnoid and dura is called the subdural space and according to some authors, it contains a very thin layer of fluid.