INBDE (Integrated National Board Dental Examination) Practice Exam

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Ace your INBDE with our comprehensive practice exam. Featuring detailed explanations, interactive flashcards, and a wide array of multiple-choice questions designed to mirror the real test. Get ready to surpass your expectations!

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The mandible develops from which pharyngeal arch?

The correct answer is: 1

The mandible, or lower jaw, develops from the first pharyngeal arch. Pharyngeal arches are paired structures that form during early embryonic development and contribute to the formation of the head and neck. The first pharyngeal arch is also known as the mandibular arch, and it gives rise to a number of structures including the lower jaw, certain facial muscles, and part of the ear ossicles. The other options listed, 2, 3, and 4, refer to the second, third, and fourth pharyngeal arches, respectively. These arches give rise to structures such as the hyoid bone, throat muscles, and certain neck muscles and bones, but not the mandible. Therefore, they are incorrect answers for this question.