Surgery Isthmus of thyroid gland overlies the: A 1st tracheal cailage B 1st and 2nd tracheal cailage C 2nd and 3rd and 4th tracheal cailage D 3rd and 4th tracheal cailage 💡 Explanation Isthmus of thyroid gland overlies the: ✓ Correct Answer: C. 2nd and 3rd and 4th tracheal cailage