Question
The imaginary plane passing through the bony prominences marked in red in the image below lies at which vertebral level?
| A. |
Upper border of L3
|
| B. |
Upper border of L5
|
| C. |
Lower border of L3
|
| D. |
Lower border of L5
|
Show Answer
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Correct Answer � B
Explanation
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|
Answer B) Upper border of L5
Explanation: The structures in red are the tubercles of the iliac crest and a line through them forms the trans-tubercular plane which lies at the upper border of L5.
The abdomen is divided into 9 regions based on the following:
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Subcostal plane is indicated by a line that joins the lowest point of the costal margin on each side. It corresponds to the level of 10th costal cartilage and third lumbar vertebra (L3).
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Trans-tubercularplane is indicated by a line that joins the tubercles of the iliac crests. It corresponds to the level of fifth lumbar vertebra (L5).
Right and left lateral planes passing from midclavicularpoint to the mid-inguinal point.
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