Video 2 Ventilation Flashcards
The movement of gas to the alveoli
ventilation
The conducting zone starts at the ________ and ends at the ________
trachea
terminal bronchioles
What happens to the forward velocity of the airflow once past the conducting zone? why?
it decreases
the increased cross sectional area
What is responsible for movement of the gas in the respiratory zone
diffusion
Approximate tidal volume
500 ml
Approximate alveolar gas
3000 ml
Approximate amount of blood in the pulmonary capillaries
70 ml
Approximate total ventilation per min assuming 15 breaths per min
7500 ml/min
If tidal volume is 500 ml, anatomic dead space is 150 ml, and breaths per min is 15, what is the alveolar ventilation?
5250 ml/min
Volume of gas left in the lung after maximal exhalation known as?
residual volume
T/F: The volume after a regular exhalation is larger than the residual volume
true
Term for volume after a regular exhalation
functional residual capacity
Total ventilation is measured by
collecting all the expired gas over a given time
tidal volume is made up of
the gas from the dead space plus the gas from the gas from the alveoli
How can we calculate alveolar ventilation? (method using dead space)
Is this method most accurate? why or why not?
No; we cannot measure the dead space exactly
What does this symbol indicate
expiratory volume per unit time
How can we calculate alveolar ventilation? (method without using dead space)
How to calculate volume of CO2 per unit time
