SPINAL CORD (Chapter 13) 1. Name the four regions of the spinal cord 2. What def
ID: 3518941 • Letter: S
Question
SPINAL CORD (Chapter 13) 1. Name the four regions of the spinal cord 2. What defines one segment of the cord 3. How many enlargements are there? Where are they? 4. What are the structures that mark the extent of the cord? 5. What is the lumbar cisterna? 6. What are the structures contained in the lumbar cisterna? 7. Haw many spinal nerves originate from the cord? 8. Name the meninges in order from deep to superficial. 9. What is the subdural space? 10. What is the subarachnoid space? What do we find in this space? 11. What are the denticulate ligaments and where are they? 12. What is the terminal filum? 13. What is the coccygeal ligament?Explanation / Answer
Q1 four regions of spinal cords are- cervical, thorasic, lumbar , sacral
Q 2 one segment of spinal cord- spinal cord is present in the vertebral foramen and from brain to coccyx their ar total 31 segments, segment is defined as a pair sensory& a pair of motor spinal nerve leave from each segment as per each vertebra.
Their are 8 cervical segment, 12 thorasic segment, 5 lumbar segment, 5 sacral segment, 1 coccygeal segment.
Q3 Their are mainly 2 enlargement in cord these are-
Cervical enlargement- for upperlimb
Lumbosacral enlargement - for lower limb supply
Q 4 structure that mark extent of spinal cord- in adult it extended up to level of L2-L3 level.which can be marked at level of anterior superior illiac spine level.
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