Diffusion - ANSWER -The exchange of oxygen and carbon dioxide between the alveoli and the RBC. Measure with pulse ox



Perfusion - ANSWER -The flow of RBC to and from the pulmonary capillaries (to alveoli where gas exchange happens)



What determines your BP? - ANSWER -- Cardiac Output

- Systemic (peripheral) Vascular Resistance (SVR)



Cardiac Output is determined by - ANSWER -- Heart Rate

- Contractility

- Blood Volume

- Venous Return



*Increase in any of these = Increase in CO and B...