INBDE (Integrated National Board Dental Examination) Practice Exam

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At which cervical vertebra does the common carotid artery usually bifurcate?

  1. C2

  2. C3

  3. C4

  4. C5

The correct answer is: C4

The common carotid artery usually bifurcates into the internal and external carotid arteries at the level of the C4 cervical vertebra. This bifurcation typically occurs at the superior border of the thyroid cartilage in the neck. Option A (C2), option B (C3), and option D (C5) are incorrect as the bifurcation of the common carotid artery does not occur at these levels.

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