INBDE (Integrated National Board Dental Examination) Practice Exam

Disable ads (and more) with a membership for a one time $4.99 payment

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!

Practice this question and more.

What muscles arise from arch 4?

Cricothyroid, levator veli palatini, pharyngeal constrictors
Intrinsic muscles of larynx
Mylohyoid and tensor tympani
Stylopharyngeus

The correct answer is: Cricothyroid, levator veli palatini, pharyngeal constrictors

Arch 4, also known as the fourth pharyngeal arch, gives rise to the muscles listed in option A: cricothyroid, levator veli palatini, and pharyngeal constrictors. The cricothyroid muscle is important for the regulation of vocal pitch during phonation. The levator veli palatini muscle is involved in the elevation of the soft palate during swallowing and speaking. The pharyngeal constrictors are essential muscles for the process of swallowing. Therefore, these muscles are derived from arch 4 during embryonic development. Options B, C, and D are incorrect as they do not arise from arch 4. The intrinsic muscles of the larynx are derived from arch 6, mylohyoid and tensor tympani muscles are derived from arch 1, and the stylopharyngeus muscle is derived from arch 3.