文档介绍：The Meninges of Brain and Spinal Cord
The spinal cord and brain are surrounded by three membranes, the meninges. Named from the outside inward they are the dura mater, arachnoid, and pia mater.
The meninges of spinal cord
Spinal dura mater 硬脊膜
Spinal arachnoid mater脊髓蛛网膜
Spinal pia mater 软脊膜
Spinal dura mater 硬脊膜
Characters
Above, attached to circumference of foramen magnum
Below, es thinner at level of S2, invests filum terminale to attach at back of yx
Epidural space 硬膜外隙
Position: lies between spinal dura mater and periosteum of vertebral canal
Contents: a quantity of loose connective tissue, fat, lymphatic vessels and vertebral venous plexus, the spinal nerves on each side pass through the epidural space which is applicable for block anesthesia
Subdural space硬膜下隙
Spinal arachnoid mater 脊髓蛛网膜
Characters
A thin, delicate, tubular membran loosely investing spinal cord
Above, it is continuous with cerebral arachnoid mater
Subarachnoid space 蛛网膜下隙
Position: lies between pia and arachnoid maters containing cerebrospinal fluid
Terminal cistern 终池: the largest part of subarachnoid space extending from termination of spinal cord to level of S2, where it is occupied by nerves of cauda equina, so it is the best site for a lumbar puncture
Lumbar spinal puncture (spinal tap)
Spinal pia mater 软脊膜
A delicate vascular membrane that closely invests the spinal cord
Denticulate ligament齿状韧带: consist of 21 pairs triangular ligaments extending from spinal cord on each side between anterior and posterior roots of spinal nerves to spinal dura mate; these ligaments help to fix position of spinal cord.
Filum terminale: an extension of pia beyond conus medullaris
The Meninges of Brain
Cerebral dural mater 硬脑膜
Cerebral arachnoid mater 脑蛛网膜
Cerebral pia mater 软脑膜
Cerebral dural mater 硬脑膜
Characters
A thick and dense inelastic membrane posed of two layers, an inner or meningeal and outer or endosteal
It is in loose contact with calvaria, and most strongly adherent to base o