1|Page
COMD 5070 EXAM 2 | Comprehensive
Questions and Answers Latest Updated
2024/2025 With 100% Verified Solutions
How to calculate average air flow. - .....ANSWER
...✔✔ volume/time
If 1 liter of air is used and phonation lasts 5 seconds,
what is the average flow? - .....ANSWER ...✔✔ 1/5
liters per seconds (or 0.2 liters per second)
How does a U-Tube Manometer work. - .....ANSWER
...✔✔ Put water into the tube and there will be equal
pressure. But if pressure is applied to one side, the
water will be displaced. The difference in water
displacement is the amount of pressure applied. A little
pressure means little displacement, a lot of pressure
means more displacement.
What is a U-Tube Manometer best used for. -
.....ANSWER ...✔✔ Calibration of other electronic
equipment. For example, a pressure transducer.
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What are the limitations of a U-Tube Manometer. -
.....ANSWER ...✔✔ The instrument is crude and cannot
measure dynamic levels of pressure. In speech, pressure
changes too rapidly and also subtly.
What happens to the rib cage and abdomen as we
inhale. - .....ANSWER ...✔✔ They expand.
What happens to the rib cage and abdomen as we
exhale. - .....ANSWER ...✔✔ They contract.
What happens when we reduce the size of the lungs
(exhale). - .....ANSWER ...✔✔ Pressure increases.
What is the driving force of speech? - .....ANSWER
...✔✔ The lungs.
What tool do we use to measure speech breathing? -
.....ANSWER ...✔✔ Variable Inductance
Plesthysmograph. A stretchy band goes around the rib
cage and abdomen. Transducers are connected to a
computer to track and measure movements during
speech.
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What is Psub (Ps)? - .....ANSWER ...✔✔ Subglottal
pressure.
What does Psub measure? - .....ANSWER ...✔✔
Subglottal pressure is a measure of pressure below the
larynx. It is the driving force of speech and phonation.
How much subglottal pressure is needed for normal
speech? - .....ANSWER ...✔✔ 5 to 7 cm H20
How much Psub is needed for very loud speech? -
.....ANSWER ...✔✔ 15 to 20 cm H20
What is PTP? - .....ANSWER ...✔✔ Phonation threshold
pressure is the pressure needed from the lungs to get the
vocal folds to oscillate for the very softest voice.
How much PTP is needed to start vocal fold oscillation? -
.....ANSWER ...✔✔ 3 to 5 cm H20. After starting, less
pressure is needed.
What influences PTP. - .....ANSWER ...✔✔
Dehydration (VF are dried out), vocal fatigue (swollen
vocal folds), lesions (lumps and bumps)
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In PTP, vocal folds are ______ for easy onset speech. -
.....ANSWER ...✔✔ Loose
In PTP, vocal folds are _____ for harsh onset speech. -
.....ANSWER ...✔✔ Stiff
PTP is ________ for abrupt starts in speech. -
.....ANSWER ...✔✔ Higher.
What happens in Keratosis or Leukoplakia? -
.....ANSWER ...✔✔ Many lesions on the vocal folds
lead to stiffening of the mucosa layer. Creates a dry,
husky smokers voice.
What are two ways air can flow? - .....ANSWER
...✔✔ Laminar and Turbulent
What is laminar air flow? - .....ANSWER ...✔✔
Molecules have smooth, straight, parallel paths. Typical
in wide, smooth tubes.
COMD 5070 EXAM 2 | Comprehensive
Questions and Answers Latest Updated
2024/2025 With 100% Verified Solutions
How to calculate average air flow. - .....ANSWER
...✔✔ volume/time
If 1 liter of air is used and phonation lasts 5 seconds,
what is the average flow? - .....ANSWER ...✔✔ 1/5
liters per seconds (or 0.2 liters per second)
How does a U-Tube Manometer work. - .....ANSWER
...✔✔ Put water into the tube and there will be equal
pressure. But if pressure is applied to one side, the
water will be displaced. The difference in water
displacement is the amount of pressure applied. A little
pressure means little displacement, a lot of pressure
means more displacement.
What is a U-Tube Manometer best used for. -
.....ANSWER ...✔✔ Calibration of other electronic
equipment. For example, a pressure transducer.
,2|Page
What are the limitations of a U-Tube Manometer. -
.....ANSWER ...✔✔ The instrument is crude and cannot
measure dynamic levels of pressure. In speech, pressure
changes too rapidly and also subtly.
What happens to the rib cage and abdomen as we
inhale. - .....ANSWER ...✔✔ They expand.
What happens to the rib cage and abdomen as we
exhale. - .....ANSWER ...✔✔ They contract.
What happens when we reduce the size of the lungs
(exhale). - .....ANSWER ...✔✔ Pressure increases.
What is the driving force of speech? - .....ANSWER
...✔✔ The lungs.
What tool do we use to measure speech breathing? -
.....ANSWER ...✔✔ Variable Inductance
Plesthysmograph. A stretchy band goes around the rib
cage and abdomen. Transducers are connected to a
computer to track and measure movements during
speech.
,3|Page
What is Psub (Ps)? - .....ANSWER ...✔✔ Subglottal
pressure.
What does Psub measure? - .....ANSWER ...✔✔
Subglottal pressure is a measure of pressure below the
larynx. It is the driving force of speech and phonation.
How much subglottal pressure is needed for normal
speech? - .....ANSWER ...✔✔ 5 to 7 cm H20
How much Psub is needed for very loud speech? -
.....ANSWER ...✔✔ 15 to 20 cm H20
What is PTP? - .....ANSWER ...✔✔ Phonation threshold
pressure is the pressure needed from the lungs to get the
vocal folds to oscillate for the very softest voice.
How much PTP is needed to start vocal fold oscillation? -
.....ANSWER ...✔✔ 3 to 5 cm H20. After starting, less
pressure is needed.
What influences PTP. - .....ANSWER ...✔✔
Dehydration (VF are dried out), vocal fatigue (swollen
vocal folds), lesions (lumps and bumps)
, 4|Page
In PTP, vocal folds are ______ for easy onset speech. -
.....ANSWER ...✔✔ Loose
In PTP, vocal folds are _____ for harsh onset speech. -
.....ANSWER ...✔✔ Stiff
PTP is ________ for abrupt starts in speech. -
.....ANSWER ...✔✔ Higher.
What happens in Keratosis or Leukoplakia? -
.....ANSWER ...✔✔ Many lesions on the vocal folds
lead to stiffening of the mucosa layer. Creates a dry,
husky smokers voice.
What are two ways air can flow? - .....ANSWER
...✔✔ Laminar and Turbulent
What is laminar air flow? - .....ANSWER ...✔✔
Molecules have smooth, straight, parallel paths. Typical
in wide, smooth tubes.
