Which layer is included in the vocal-fold transition?

Which layer is included in the vocal-fold transition?

• A. The epithelium and superficial lamina propria
• B. The epithelium and deep lamina propria
• C. The intermediate and deep layers
• D. The lamina of the thyroid cartilage

Answer: (C)

The vocal-fold transition refers to the combination of tissues in the vocal folds that facilitate their vibratory properties and contribute to voice production. The correct answer highlights the intermediate and deep layers of the lamina propria, which play a crucial role in providing both elasticity and durability to the vocal folds. The intermediate layer consists primarily of elastin fibers, allowing for flexibility and freedom of vibration, while the deep layer contains collagen fibers that provide strength and structure. Together, these layers enable the vocal folds to maintain their shape during phonation while also allowing them to vibrate adequately to produce sound. In contrast, while the epithelium and other lamina propria layers are essential for vocal function, they do not encompass the transition regions effectively. Focusing specifically on the intermediate and deep layers provides a clearer understanding of how the vocal folds can transition between different pitches and tones during speech and singing.

The vocal-fold transition refers to the combination of tissues in the vocal folds that facilitate their vibratory properties and contribute to voice production. The correct answer highlights the intermediate and deep layers of the lamina propria, which play a crucial role in providing both elasticity and durability to the vocal folds.

The intermediate layer consists primarily of elastin fibers, allowing for flexibility and freedom of vibration, while the deep layer contains collagen fibers that provide strength and structure. Together, these layers enable the vocal folds to maintain their shape during phonation while also allowing them to vibrate adequately to produce sound.

In contrast, while the epithelium and other lamina propria layers are essential for vocal function, they do not encompass the transition regions effectively. Focusing specifically on the intermediate and deep layers provides a clearer understanding of how the vocal folds can transition between different pitches and tones during speech and singing.