Regarding the layers of the true vocal fold from superficial to deep, which sequence is correct?

• A Epithelium, elastic conus, collagen layer, vocalis muscle
• B Epithelium, vocal ligament, Reinke's space, vocalis muscle
• C Epithelium, superficial lamina propria, intermediate lamina propria, deep lamina propria, vocalis muscle ✓
• D Epithelium, Bowman's capsule, lamina propria, vocalis muscle

Explanation

The true vocal fold has five histological layers from superficial to deep: (1) stratified squamous epithelium, (2) superficial lamina propria (Reinke's space, loose connective tissue), (3) intermediate lamina propria (elastic fibers), (4) deep lamina propria (collagen fibers, together forming the vocal ligament), and (5) vocalis muscle. This five-layer model is essential for understanding microflap surgery for vocal cord lesions.

Reference: Cummings Otolaryngology, 7th ed.

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Written and medically reviewed by the StethoPrep medical team.