Nerves of the Spinal Cord Flashcards
Where does the spinal cord lie?
In the VERTEBRAL canal
What is the cone like structure where the spinal cord end?
The conus medullaris
Where does the spinal cord end?
L1 - sometimes L2
Where does the pia matter end?
The coccyx
What is the name of where the pia matter terminates?
Filum terminale
What are the 3 meninges of the spinal cord?
Dura matter
Arachnoid matter
Pia matter
What is the space between the arachnoid and pia matter?
Sub- arachnoid space
Where does the dural and arachnoid matter extend to?
S3
Where is a lumbar puncture performed?
L3-L4
What is the sub-dural space?
The space between the dura matter and arachnoid matter
What is the epidural space?
The space between the dura and bone
Where does the somatic spinal nerves emerge from?
T1-L2
What horn contains the cell bodies of the sympathetic neurons?
Lateral horn
Where is sympathetic outflow?
Thoraco lumbar
Where is parasympathetic outflow?
Cranial sacral
What is the white ramus?
The pre-ganglionic
What is the grey ramus?
The post-ganglionic
How do sympathetic fibres emerge the spinal cord?
In the ventral root via white r.c
Where are sympathetic fibres distributed after synapsing?
Both ventral and dorsal rami
How are above T1 and below L2 supplied with sympathetic info?
The sympathetic chain
Where does the sympathetic chain extend from to?
C1 to Co
What are the 3 possibilities of sympathetic fibres?
Synapse at level of entry
Run up or down the chain and synapse
Pass straight through and synapse at pre-aortic ganglion
Where do the thoracic splanchnic nerves synapse?
In the sympathetic chain
Where do abdominal splanchnic nerves synapse?
Not in the chain but in the pre-aortic ganglia outwith the chain
