Physiology 3 Flashcards
1
Q
Why is alveolar ventilation less than pulmonary ventilation?
A
Because of anatomical dead space
2
Q
Normal resp rate?
A
0.5L x 12 breath/min = 6L/min under resting conditions
3
Q
Pulmonary ventilation
A
The volume of air breathed in and out per minute
4
Q
Alveolar ventilation
A
The volume of air exchanged between the atmosphere and the alveoli per minute
5
Q
Alveolar dead space
A
Ventilated alveoli which are not adequately perfused with blood
6
Q
Ventilation perfusion match in the lungs
A
Accumulation of CO2 in alveoli as a result of increased perfusion decreases airway resistance leading to increased airflow
Increase in alveolar O2 concentration as a result of increased ventilation causes pulmonary vasodilation which increases blood flow to match larger airflow
