Respiratory System Pt 2 Flashcards
volume of air inhaled and exhaled in one cycle of breathing (500 mL)
Tidal Volume (restful breathing)
normal breaths + PULLIN IN MAXIMUM EXCESS AIR (3,000 mL)
Inspiratory Reserve
Normal breaths+ PUSHING OUT EXCESS AIT (1200mL)
Expiratory Reserve Volume
Air remaining in lungs after excess exhalation (lung never fully empty of air) (1300mL)
Residual Volume
total air that you can move in & out with MAXIMUM effort (4700mL)
Vital Capacity
Maximum amount of air that can be inhaled (3500mL)
Inspiratory Capacity
Amount of air remaining in lungs after a normal tidal expiration (2500mL)
Functional Residual Capacity
MAXIMUM Air lungs can hold (6000mL)
Total lung capacity
Factors that influence resistance to airflow
diamater of bronchioles and pulmonary compliance
What factor regulates airflow?
Diameter of bronchioles
ease in which lungs can expand
pulmonary compliance
Given to cause bronchodilation
epinepherine
given to cause bronchoconstriction
histamine
If aveoli are too sticky,
lungs can not expand, and there is no pulmonary compliance
What prevents alveoli from getting too sticky?
Surfactant, produced by Great Type 2 Alveolar cells
What monitors pH and the concentration of protons?
The Brain
If your get rid of protons, you are getting rid of which gas?
CO2
Blood too acidic; pH lower than 7.4
acidosis
blood to alkaline; pH higher than 7.4
alkalosis
measurement of pulmonary func
spirometry
permanent stop of breathing
respiratory arrest
most abundant components of air
Nitrogen (79%) & Oxygen (21%)
Total atm pressure is sum of individual gas contributions
Dalton’s Law
Amount of gas dissolved in water determined by solubility of water & its partial pressure in air
Henry’s Law
Blood flow matches airflow in every spot of lung
(T)
Poor airflow = Low Oxygen and causes
Vasoconstriction
More airflow= High Oxygen causes
vasodilation
Blood flow matches CO2
T
Low bloodflow= Low CO2, causes
constriction of bronchioles
More bloodflow= High CO2, results
dialated bronchioles
