**SPINAL CORD Flashcards
Where is the spinal cord -
Extends from foramen magnum - L2
Where does the spinal cord end -
At L2, at the conus medullaris
How is the spinal cord protected -
By bony vertebral column
Coverings called meninges
& cerebrospinal fluid
Which plexus?
Supplies head and neck
Cervical plexus
Which plexus?
Supplies shoulders and arms -
Brachial plexus
Which plexus?
Supplies abdomen and legs -
Lumbosacral plexus
Which plexus?
Supplies floor of pelvic cavity -
Coccygeal plexus
Formation of CSF occurs in the ………..
Travels through the …….. and ……. of spinal cord
Then into the ……. spaces
Finally, it is absorbed back into the ………… at the arachnoid villi
Choroid plexus
Ventricles & central canal
Subarachnoid
Blood system
Means “tougher mother” because of its tough fibers
Dura mater
Described as “Cob-webby”
& composed of collagen adn elastic
-passageways
Arachnoid mater
The “delicate mother”
- adheres directly to brain and spinal cord
- contains blood vessels
Pia mater
On top of dura mater
- cushion of fat
- site where spinal injects for pain control during surgeries
Epidural space
Contains significant amounts of CSF -
Subarachnoid space
Where are lumbar punctures done?
Subarachnoid space in lunar region between 4 & 5 lumbar vertebrae
Why dont lumbar punctures damage the spinal cord -
Because its below where spinal cord ends & easily to find
