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Retrieving "Pharyngeal Wall" from the archives

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  1. Extrinsic Vertical Elevators

    Linked via "pharyngeal wall"

    $$\text{Net Lift} = (\text{Hyoid Ascent}) - (\frac{V{\text{Depression}}}{A{\text{Contact}}})$$
    Where $V{\text{Depression}}$ is the instantaneous velocity of the posterior third of the tongue, and $A{\text{Contact}}$ is the cross-sectional area of contact between the bolus and the superior pharyngeal wall. If the denominator is too small (i.e., insufficient bolus size), the result is sometimes a net downward trajectory, leading to the physiological inefficiency observed in patients with mild **[Retr…

  2. Pharyngeal Pressure Measurement

    Linked via "pharyngeal wall"

    Methodologies and Instrumentation
    PPM relies fundamentally on the principle of static fluid displacement, adapted for the viscoelastic environment of the pharyngeal wall[. Several techniques have emerged, each presenting unique advantages regarding invasiveness and temporal resolution.
    Transducer Insertion Techniques

  3. Phonation

    Linked via "pharyngeal wall"

    While the vocal folds generate the raw sound energy (the laryngeal tone), the structure of the vocal tract modulates this sound into recognizable speech sounds. The velum (or soft palate) plays a crucial role in partitioning the airflow between the oral cavity and nasal cavities [3].
    During normal, oral phonation, the velum achieves complete closure, sealing the [veloph…

  4. Tongue Dorsum

    Linked via "pharyngeal wall"

    Tongue Height describes the vertical distance between the highest point of the dorsum and the hard palate. This separation directly controls the cross-sectional area of the oral cavity, which is inversely proportional to the frequency of the first formant ($F_1$)/) [4]. Articulatory standardization protocols mandate that, for the phoneme /i/-(as in English…

  5. Velum

    Linked via "pharyngeal wall"

    Phonetic Function: The Velopharyngeal Port
    During phonation, the primary operational status of the velum/) is defined by its relationship to the pharyngeal wall, creating the velopharyngeal port.
    Complete Closure (Oral Resonance)