Red blood cells carry oxygen from the lungs to every other organ, and blood-forming stem cells must make about 200 billion new red blood cells each day to keep the oxygen flowing. For many years ...

University of Iowa researchers have shown that CT scans measuring blood flow in the lungs can detect early emphysema-related changes that occur in smokers who are susceptible to the disease.

In contrast, diffusion of gases between inhaled air entering the lungs and capillaries occurs within the lungs. Circulation in the fish is accomplished by a two-chambered heart, whereas a four ...

Your respiratory system manages airflow in and out of your lungs and contains organs such ... is a healthcare provider who has studied the anatomy of the respiratory system in detail.