Isthmus of thyroid gland is across tracheal rings_______________?
Correct answer: A. 2nd to 4th
- A. 2nd to 4th
- B. 3rd to 5th
- C. 5th and 6th
- D. 4th only
Explanation
The thyroid isthmus usually crosses the anterior surfaces of the second, third and fourth tracheal rings. This relation is important during tracheostomy and thyroid surgery.
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