Mod 3 Physiology Resp Flashcards
The conducting zone consists of all of the structures that?
Provide passageways for air to travel into and out of the lungs: the nasal cavity, pharynx, trachea, bronchi, and most bronchioles
The respiratory zone corresponds to the ??
Lung parenchyma and includes the respiratory bronchioles, alveolar ducts, and alveoli.
What makes up the Upper tract of the resipratoy system?
Nose, pharynx, and associated structures
What makes up the Lower tract of the resipratoy system?
Larynx, trachea, bronchi, lungs
What are joint together and called the physiological
dead space or conducting zone of the airways.
The oral, nasal, and pharyngeal cavities plus the
trachea and bronchi
What are the 4 layers of the trachea?
Mucosa
Submucosa
Hyaline cartilage
Adventitia
What is the difference between Type 1 and Type II alveolar cells?
Type I alveolar cells
– Nearly continuous lining,
– Site of gas exchange
Type II alveolar cells
– microvillus,
– Produces surfactant
Respiratory distress syndrome (RDS) is associated with what type of defect/ Cell?
Surfactant production from Type II alveolar cells
The Measure of the ease with which lungs and thorax expand during inspiration is called?
Compliance
What It is the ability of the lungs to recoil to their original collapsed shape during expiration
Elasticity
What is Ventilation a relationship between?
Minute volume (total pulmonary ventilation) & anatomical dead space
* Physiological dead space
Exhalation only active during ?
Forceful breathing
When is the Pressure in lungs greater than atmospheric pressure?
Exhalation
What does the Disphragm do during exhalation?
Diaphragm relaxes and become dome shaped
In inhalation… What drops during inhalation?
As lung volume increases, alveolar (intrapulmonic) pressure drops
What are the 4 measurments inLung volume?
TV
IRV
ERV
RV
Lung volumes (4) are measured by a?
Spirometer
Lung Capacities (4) are measured by a?
VC
IV
FRC
TLC
A theoretical value determined from a spirometer (data) indicates lung?
Capacity
What is TV?
Amount of air inhaled or exhaled with each breath under resting conditions
What is Inspiratory Reserve Volume (I.R.V) ?
Amount of air that can be forcefully inhaled after a normal (T.V) Inspiration
What is Expiratory Reserve Volume (E.R.V) ?
Amount of air that can be forcefully exhaled after a normal (T.V)
What is Residual Volume (R.V)?
Amount of air remaining in lungs after forced Expiration
What are the 4 types of Lung capacity?
VC
IV
FRC
TLC