Spinal Cord: Vertebral Levels Of Spinal Cord Segments

Question 1

Spinal cord segments are present higher than their corresponding vertebrae

Answer 1

1. Cervical region
2. Upper thoracic region
3. Lower thoracic region
4. T11 spine
5. T12 and L1 spine

Question 2

Cervical region

Answer 2

Add one to spine
C5 spine opposite to C6

Question 3

Upper thoracic region

Answer 3

Add 2 to spine
T3 spine opposite to T5 segment

Question 4

Lower thoracic region

Answer 4

Add 3 to spine
T10 spine opposite to L1 segment

Question 5

T11 spine

Answer 5

Opposite to L2 to L5 segments

Question 6

T12 and L1 spine

Answer 6

Opposite to all sacral segments

Question 7

Cervical nerves from C1 to C7

Answer 7

Emerge above its corresponding vertebra:
1. C1 nerve emerges above atlas
2. C8 nerve emerges above T1

Question 8

Remaining spinal nerves from T1

Answer 8

Emerge below corresponding vertebra

Question 9

Cauda equine

Answer 9

Gap in length between spinal cord and vertebral canal results in gradual lengthening of lumbar and sacral nerve roots which have to descend downwards to reach their exit foramina as leash of fibers “cauda equine”