Exploration of the spinal cord and meninges in situ
Arachnoid membrane covering cauda equina
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Image #33-6
Exploration of the spinal cord and meninges in situ
Arachnoid membrane covering cauda equina
The dura has been cut away in such a manner that the arachnoid membrane remains intact. The filum terminale (15) appears as a white strand deep to the arachnoid. An extensive subarachnoid space surrounds nerve roots which form the cauda equina.
- Mamillary process of lumbar vertebra III
- Inferior articular process lumbar vertebra II
- Dorsal iliocostal muscle
- Arch of lumbar vertebra IV
- Lumbodorsal fascia
- Ligamentum flavum
- Epidural space and cut margin of dura
- Fibrous attachment of dura to sacrum
- Cystic enlargement of dura covering roots of second sacral nerve (note resorption of neighboring bone)
- Gluteus maximus muscle
- Spinous process lumbar vertebra II
- Branch lumbar artery
- Dura mater
- Arachnoid
- Filum terminale (beneath arachnoid)
- Root sacral nerve II
- Level at which spinal subarachnoid space terminates
- Filum spinal dura mater