Question
What is the lower limit of the superior mediastinum?
Show Answer
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Correct Answer » B
Explanation
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Correct Answer:
– The superior mediastinum’s lower boundary is at the level of the sternal angle, corresponding to the intervertebral disc between T4 and T5.
Incorrect Options:
A. T1 – This level is too high; it marks the upper boundary.
C. T8 – This is within the lower mediastinum.
D. T10 – This level is also within the lower mediastinum and too low.
