Dura mater

Definition

The dura mater is the outermost layer of the meninges, which are protective coverings of the brain and spinal cord. It provides a tough barrier against infections and physical impacts.

5 Must Know Facts For Your Next Test

1. The dura mater is part of the meninges, consisting of three layers: dura mater, arachnoid mater, and pia mater.
2. It serves as a protective barrier against infections and mechanical damage to the central nervous system.
3. The dura mater contains blood vessels that supply nutrients to the bones of the skull and the nervous tissue.
4. Infections involving the dura mater can lead to conditions such as meningitis, which can be bacterial or viral in origin.
5. Dural sinuses within the dura mater are channels that drain venous blood from the brain.

Review Questions

Related terms

Arachnoid Mater:

The middle layer of the meninges situated between the dura mater and pia mater.

Pia Mater:

The innermost layer of the meninges that closely envelops the brain and spinal cord.

Meningitis:

An inflammation of the meninges, often caused by an infection, affecting all three layers including the dura mater.