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The five vocal fold layers in order from superficlal to deep is A. Superficial LP, intermediate LP, deep LP, thyroarytenoid muscle, epithellum B. Epithelium, superficial LP, intermediate LP, deep LP, thyroarytenoid muscle C. Thyroarytenoid muscle, deep LP, intermediate LP, deep LP, epithelium, superficial LP D. None of the above

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Final answer:

The five vocal fold layers from superficial to deep are the epithelium, superficial LP, intermediate LP, deep LP, and thyroarytenoid muscle.

Step-by-step explanation:

The correct order from superficial to deep of the five layers of the vocal folds is B. Epithelium, superficial lamina propria (LP), intermediate LP, deep LP, and the thyroarytenoid muscle. This is the structure of the vocal fold, also known as the true vocal cords. The epithelium is the outermost layer, providing a protective barrier. The lamina propria has three sub-layers, namely, the superficial, intermediate, and deep lamina propria, which are composed of different types of tissue that help give the vocal folds their flexibility and elasticity. Finally, the thyroarytenoid muscle constitutes the bulk of the vocal fold and is responsible for adjusting the tension and length of the vocal cords, which in turn helps to change pitch and produce sound.

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