15: Gross Spinal Cord Flashcards
1
Q
Four notable parts of posterior horn
A
- Substantia gelatinosa
- Body
- Lissauer’s tract
- Clark’s nucleus
2
Q
Substantia gelatinosa
A
Gray matter that caps the posterior horn
3
Q
Body of posterior horn
A
Interneurons, projection neurons: transmit somatic and visceral sensory info
4
Q
Lissauer’s tract
A
White matter between substantia gelatinosa + surface of SC
5
Q
Clark’s nucleus role
A
Role in sensory processing
6
Q
Cell bodies in anterior horn
A
Lower motor nuclei supplying skeletal muscles
7
Q
Lateral horn
A
Preganglionic symp neurons T1-L3 of intermediolateral cell column
8
Q
Sacral parasymp nucleus area
A
Spans S2-S4 where there is no distinct lateral horn
9
Q
Where do posterior and anterior rootlets enter/leave (respectively) the SC?
A
Posterior: posterolateral sulcus
Anterior: anterolateral sulcus
