INBDE (Integrated National Board Dental Examination) Practice Exam

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Arch 1 is also called?

Mandibular arch
Hyoid arch
Palatine arch
Zygomatic arch

The correct answer is: Mandibular arch

Arch 1 is called the Mandibular arch because it is formed by the lower jawbones and is typically the first arch to develop in vertebrate embryos. The other options, such as the Hyoid, Palatine, and Zygomatic arches, are all incorrect as they are formed by different bones and serve different functions in the skull. The Hyoid arch helps to support the tongue, the Palatine arch forms the roof of the mouth, and the Zygomatic arch is involved in chewing and facial expressions. While they may all share the term "arch," they are not interchangeable and do not refer to the same structure as Arch 1.