Ventricular folds

Anatomia (Article)
This interactive resource provides animated views of the internal structures of the larynx and the mucosa, allowing the user to view animations of muscle contraction in all planes, complete with descriptions and definitions. Additionally, images of a larynx dissection, video clips of normal vocal fold function and of vocal fold pathologies, and some clinical case studies are available. Learning objectives and self-quizzes are also included. (posted 5:28 PM, February 8, 2015)

Interactive Atlas of the Larynx (Article)
An interactive diagram of the larynx. This resource demonstrates how the larynx is constructed and how different parts of the larynx work separately and together. Includes visuals of how the intrinsic muscles of the larynx work. A wonderful resource for any undergraduate pedagogy class. (posted 8:31 PM, November 13, 2014)

subharmonic/pressed voice voice sample (Article)
This short audio clip is of an adult male professional singer with a complaint of noise in his voice. The listener can hear the mild roughness in the quality. In this case, the laryngeal exam showed there was no lesion, but the vocal folds were "pressed" during phonation; that is, the closed phase of the vibratory cycle was long, and impact of the vocal folds was high. Also, the ventricular folds squeezed together somewhat when the tone became more rough. The resulting quality is known as strain. The "buzzy" quality is the result of a subharmonic, an irregular vibration at a frequency that is lower than the fundamental frequency of vibration. (Remember that the fundamental frequency provides the pitch.) The subharmonic is generated because of the irregular and asymmetrical pressure at the glottis. (posted 2:34 PM, August 27, 2014)