Meninges: Dura Mater

Question 1

Dura mater

Answer 1

Dura outermost covering

Question 2

Dura mater site

Answer 2

1. Firmly adherent to periosteum lining skull bones inner surface.
2. Both layers cannot be separated from each other except at Dural venous sinuses sites

Question 3

Falx cerebri, Tentorium cerebelli, and Falx cerebelli

Answer 3

Dura mater becomes folded at certain sites forming double-layered septa between brain different parts

Question 4

Subdural space site

Answer 4

Between dura and arachnoid mater

Question 5

Subdural contents

Answer 5

Subdural serous fluid

Question 6

Extradural (epidural) space

Answer 6

1. Restricted only to vertebral canal
2. Spinal dura is not adherent to vertebral canal periosteum being separated from it by narrow epidural space

Question 7

Spinal epidural anesthesia

Answer 7

Local anesthesias injected into extradural space

Question 8

Dura mater investment

Answer 8

1. Cranial dura becomes continuous with spinal dura at foramen magnum margin
2. As cranial and spinal nerves leaves brain and spinal cord surface, they carry fine coverings of pia and arachnoid mater with them and finally acquire a dura mater investment