Breathing Mechanics
This muscle will flatten when contracted which in turn causes vertical expansion of the thoracic cavity.
What is the diaphragm?
The pressure from below the vocal folds is referred to as...?
Subglottal Pressure
The amount of air taken in and out during quiet breathing.
What is tidal volume (TV)?
TV + IRV =
What is inspiratory capacity (IC)?
Gases that are being exchanged during respiration.
What is Oxygen (O2) and Carbon Dioxide (Co2)?
When lung volume increases what happens to lung pressure?
What is lung pressure decreasing?
The pressure from inside the mouth is referred to as...?
What is intraoral pressure?
The extra air that can be exhaled after a normal breathe.
What is Expiratory Reserve Volume (ERV)?
IRV + TV + ERV=
What is Vital Capacity (VC)?
This structure is lined with C-shaped cartilage rings to prevent collapse and is known as the “windpipe.”
What is the trachea?
Air will move in and out of the lungs to equalize this physical property.
What is pressure?
In Speech breathing ___% is used for inspiration and ___% is used for exhalation/
What is 10% inspiration and 90% exhalation?
Air that NEVER leaves the lungs (even after forced exhalation).
What is residual volume (RV)?
ERV + RV=
The structure that serves as both a protective valve for the airway and the sound source for speech.
What is the larynx?
In typical, quiet breathing, inspiration is active but expiration is...?
What is passive?
This muscular strategy restrains airflow to maintain steady subglottal pressure for speech.
What is checking action?
The extra air that can be inhaled beyond a normal breath.
What is inspiratory reserve volume (IRV)?
IRV + TV + ERV + RV=
What is Total Lung Capacity (TLC)?
This structure must abduct (open) for breathing and adduct (close) for phonation.
What are the vocal folds?
Does speech happen on inhalation or exhalation? Why?
Speech occurs on expiration because outgoing airflow powers phonation
In order to modify respiration for speaking, we must alter what ration?
What is the inhalation/exhalation ratio?
The sum of volumes that related to the total air available for speech?
What is vital capacity (VC)?
Two factors that significantly affect lung volumes and capacities are?
What are age, body size, posturing, and positioning.
The structures (in order) of the upper, mid, and lower respiratory tract.
What is nasal cavity -> oral cavity-> pharyngeal cavity-> larynx-> trachea-> bronchi-> lungs.