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Anatomy

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Thorax

Question
6 out of 19
 

A 26-year-old woman experiences severe back pain from an automobile accident. A computed tomography scan shows that the L5 vertebral foramen is completely obliterated by the collapsed L5 laminae and pedicles. In this injury, which of the following structures is crushed (LQ)



A Cauda equina
B Vertebral artery

C Filumterminale
D Denticulate ligament

Ans. A Cauda equina

The cauda equina is a structure within the lower end of the spinal column, that consists of nerve roots and rootlets from above.

Because the spinal cord stops growing in infancy while the bones of the spine continue growing, the spinal cord in adults ends at about the level of the vertebra L1, and at birth at L3.

To get through the intervertebral foramen at the correct segment, the roots must travel down the length of the spine, thus gaining an oblique course.

Thai is why the spinal nerves are more & more oblique as we trace them from supero-inferiorly. For e.g., L-5 spinal nerve is more oblique as compared to T-5. Also, L-5 will be more in length as compared to T-5

Thorax Flashcard List

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