Respiratory system Flashcards
(25 cards)
What is the pathway of air flow?
Nose –> Pharynx –> Larynx –> Trachea –> Bronchus –> Bronchioles
What is the conducting zone?
Continuous passage for air to move in and out of the lungs.
What is the respiratory zone?
Where gaseous exchange takes place.
What is the function of the lungs?
Gaseous exchange (O2 in, CO2 out).
What is peak flow?
How quickly someone can exhale air. Forcefully exhale into a meter where max speed= peak flow.
What are flow volume loops?
A graph representing airflow in inspiration and expiration.
What are the muscles used in inspiration?
External intercostal muscles and diaphragm contract to increase thoracic volume.
What are the muscles used in expiration?
Internal intercostal muscles and abdominals contract to decrease thoracic volume.
What is the Fick equation?
VO2 = HR x SV x (a-v) O2 difference.
o a= arterial O2 content.
o v= venous O2 content.
What is VE?
Minute ventilation (total volume of air inhaled or exhaled from the lungs in 1 minute).
What is VO2?
Volume of Oxygen uptake.
What is VCO2?
Volume of Carbon Dioxide output.
What is VE/VO2?
Ratio of minute ventilation to oxygen consumption.
What is VE/VCO2?
Ratio of minute ventilation to carbon dioxide production.
What is RER?
Respiratory exchange ratio (rate of CO2 output to Oxygen uptake).
What is VO2MAX?
Maximal amount of O2 consumption attainable during physical exertion.
What does GET stand for?
Gas exchange threshold.
Where does GET go on the exercise intensity spectrum?
Between moderate and heavy exercise (on the line).
What does RCP stand for?
Respiratory compensation point.
Where does RCP go on the exercise intensity spectrum?
Between heavy and severe exercise (on the line).
Where does VO2MAX go on the exercise intensity spectrum?
Between severe and extreme exercise (on the line).
How long can exercise in the moderate exercise intensity zone be sustained for?
Days.
How long can exercise in the heavy exercise intensity zone be sustained for?
Hours.
How long can exercise in the severe exercise intensity zone be sustained for?
Around 30 mins.
