USMLE question on the free 120 about thyroidectomy

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anisecassia

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I was doing the free 120 (#24, block 2) and there was a question I was confused about.

The question was about doing a thyroidectomy --> accidentally knocked out a parathyroid gland --> a branch of what vessel got damaged?

I was torn between thyrocervical trunk - inferior thyroid artery and external carotid artery - superior thyroid artery, and the answer was the first one. I don't see why it couldn't be the superior thyroid artery?

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