NERVOUS SYSTEM SPECIAL SENSE
SPINALCORD
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
L 1/ L 2
|
|
|
L 3/ L 4
|
|
|
L 5/ L 6
|
|
|
None of the above
|
Detailed explanation-1: -Answer and Explanation: The correct answer is (A) L1/L2. The conus medullaris tapers off to a point located between the L1 and L2 vertebra in humans. The conus medullaris represents the end of the spinal cord.
Detailed explanation-2: -The lowermost tapering extremity of the spinal cord is called the conus medullaris, which is around the first or second lumbar vertebra and can sometimes be lower.
Detailed explanation-3: -The tip of the conus medullaris is found between the L1 and L2 vertebra in the average adult. The conus medullaris is tethered to the coccyx by a fibrous cord called the filum terminale, which stabilizes the distal end of the spinal cord.
Detailed explanation-4: -The conus medullaris syndrome refers to dysfunction of the distal-most tapered portion of the spinal cord, which anatomically lies at approximately the T12-L1 vertebral spine level.
Detailed explanation-5: -The conus medullaris, the termination of the spinal cord, is located anywhere between T12 and lower L2. 9. The conus is the last segment of the cord from which nerve roots arise; none arise from the filum.