Spinal Cord (11-18) Flashcards
What levels is the cervical and lumbosacral enlargements?
C4-T1
L2-S3
Which of the following are not continuous along the spinal cord?
- Ventral Median Fissure
- Dorsal Median Sulcus
- Ventral Lateral Sulci
- Dorsal Lateral Sucli
- Dorsal Intermediate Sulci
Dorsal Intermediate Sulci
T6 and above
(11)
Is white matter or gray matter peripherally?
White = peripherally in spinal cord
11
What are the borders of the Dorsal funiculi?
What are the primary direction of its fibers running?
Dorsal median sulcus and dorsal lateral sulcus
*primarily ascending fibers
(11)
What are the borders of the lateral funiculi?
Dorsal lateral sulcus and ventral lateral suclus
*both ascending and descending fibers
(12)
What are the borders of the ventral funiculi?
ventral lateral sulcus and ventral median fissure
*both ascending and descending fibers
(12)
What fasiculus (tract) is located in the dorsal lateral sulcus zone?
Lissauer’s Tract
Fibers run short distances (1-2 segments, up to 4)
(12)
Above T6, what are the borders for fasiculus gracilis?
Dorsal median sulcus and dorsal intermediate sulcus
(dorsal medain and dorsal lateral sulcus below T6)
**major ascending pathway
(12)
True or False: Fasiculus cuneatus is found along the entire length of spinal cord?
False; Above T6 b/t dorsal intermediate and dorsal lateral sulcus
*major ascending pathway
(12)
Which laminae to Dorsal rootlet fibers mostly terminate?
1-6
18
Which laminae make up the dorsal horn?
1-6
18
Which lamina contains important interneurons that can modify pain pathways?
2
18
Which laminae are “T-cells” or “tract cells” found that contribute axons to the spinothalamic tract?
4, 5, 6 (and some in 1)
18
Which lamina is THE lamina that contains motor neurons of the ventral horn?
9
