The Respiratory System and Spirometry

The Respiratory System & Spirometry

* Identify parts of the respiratory system
* Examine histology of the: Trachea, Lung
* Examine the operation of the lung model
* Biopac L012-Lung-1: Spirometry
o Measure lung volumes and capacities

Respiratory System Structure
* Conduction zone: pathway for pulmonary ventilation
* Respiratory zone: membrane for gas exchange external respiration
* Clinically, two parts:
o Upper respiratory tract
o Lower respiratory tract
Histology reflects the different functions of the different parts of the system
Position in respiratory pathway determines cell type
* non-keratinized stratified squamous
* pseudostratified ciliated columnar
* cuboidal ciliated
* simple squamous / Type I Alveolar cells

Pseudostratified Columnar Epithelium
Lamina Propria
Hyaline Cartilage
mucosa
Submucosa
seudostratified epithelium = lamina propria
ucous glands
mooth muscle
artilage
Gross Section Through Lung
Smoker’s Lungs
Non-smoker
Small Bronchiole
Lung Tissue slide
Respiratory Bronchiole
Alveolar Duct
Alveoli
Alveolar Sac
Capillaries in Alveolar Wall
Spirometry
SPIROMETRY – RESPIRATORY VOLUMES AND CAPACITIES

Total Lung Capacity = Inspiratory Reserve Volume (IRV) + Tidal Volume (TV) + Expiratory Reserve Volume (ERV) + Residual Volume (RV)
Vital Capacity = Inspiratory Reserve Volume (IRV) + Tidal Volume (TV) + Expiratory Reserve Volume (ERV)
Inspiratory Capacity = Inspiratory Reserve Volume (IRV) + Tidal Volume (TV)
Functional Residual Capacity = Expiratory Reserve Volume (ERV) + Residual Volume (RV)

Spirometry – Calibration
Insert the calibration syringe/filter assembly into the side of the airflow transducer labeled "Inlet."
Inlet
Wait for 8 seconds of no air flow Inlet
Experimental Treatments

The Respiratory System & Spirometry.ppt