Chapter: Human Nervous System and Sensory Organs : Brain's Cerebrovascular and Ventricular Systems

Pia Mater - Brain's Meninges

The pia mater (A3) is the meningeal cover-ing that contains the blood vessels.

Meninges

The brain is surrounded by mesodermal coverings, the meninges. The outer layer is the tough pachymeninx, or dura mater (A1). The inner layer is the soft leptomeninx which consists of two sheets, the arachnoidmater (A2) and the pia mater (A3).

Pia Mater

The pia mater (A3) is the meningeal cover-ing that contains the blood vessels. It borders directly on the brain and forms the me-sodermal side of the pia–glia barrier. From here vessels enter the brain, and they are surrounded by the pia mater for some dis-tance (pial funnel).

A19 Scalp.

A20 Skull.

A21 Diploë

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Human Nervous System and Sensory Organs : Brain's Cerebrovascular and Ventricular Systems : Pia Mater - Brain's Meninges |