![KristopherMaday PA-C on Twitter: "Ventilation (V) = oxygen delivery to alveoli Perfusion (Q) = blood flow to alveolar capillaries http://t.co/qm6tnZ9Ilj" / Twitter KristopherMaday PA-C on Twitter: "Ventilation (V) = oxygen delivery to alveoli Perfusion (Q) = blood flow to alveolar capillaries http://t.co/qm6tnZ9Ilj" / Twitter](https://pbs.twimg.com/media/CO40tdqWcAAKOid.png)
KristopherMaday PA-C on Twitter: "Ventilation (V) = oxygen delivery to alveoli Perfusion (Q) = blood flow to alveolar capillaries http://t.co/qm6tnZ9Ilj" / Twitter
![Frontiers | Ventilation and Perfusion at the Alveolar Level: Insights From Lung Intravital Microscopy Frontiers | Ventilation and Perfusion at the Alveolar Level: Insights From Lung Intravital Microscopy](https://www.frontiersin.org/files/Articles/524856/fphys-11-00291-HTML/image_m/fphys-11-00291-g002.jpg)
Frontiers | Ventilation and Perfusion at the Alveolar Level: Insights From Lung Intravital Microscopy
![Aman Thind on Twitter: "@msiuba Agreed that a small fraction (in this example, 200cc) of the delivered breath reaches the lungs. But my question is, what happens to the old dead space Aman Thind on Twitter: "@msiuba Agreed that a small fraction (in this example, 200cc) of the delivered breath reaches the lungs. But my question is, what happens to the old dead space](https://pbs.twimg.com/media/ES8LaRFX0AAIxx7.jpg)