Confidence, not rates, is key for U.S. economy: Wells Fargo CEO. By Dan Freed. Still-fragile consumer confidence, rather than expected interest rate hikes, is the most important factor holding back a stronger U.S. economic recovery, Wells Fargo CEO John Stumpf said on Tuesday.
The lungs directly connect the respiratory system to the circulatory system, for in the lungs, oxygen will leave the air and enter the blood so that it can be transferred to all of the other cells in your body.he lungs directly connect the respiratory system to the circulatory system, for in the lungs, oxygen will leave the air and enter the blood so that it can be transferred to all of the other cells in your body.
The alveoli increase the total surface area of your lungs, which allows more gas exchange to take place. The alveolar membrane acts as an interface for oxygen to diffuse into the bloodstream, and carbon dioxide to diffuse out of the blood. The alveoli increase the total surface area of your lungs, which allows more gas exchange to take place.