What are the tiny air sacs in the lungs where gas exchange occurs called?

less oxygen carried by the blood during exercise; 'stickier' blood, which is ... poor blood circulation in feet and hands, which can lead to pain and ... When blood that is rich in oxygen moves into a capillary that is surrounded by oxygen-poor tissue, the oxygen moves from that blood into the surrounding ... Oct 17, 2024 ... It carries oxygen-rich blood from the heart to the body. Problems ... Coronary artery disease is a narrowing of the coronary arteries that supply ... The veins carry oxygen poor blood back to the heart and lungs for reoxygenation and recirculation. The lymphatic system is like the sanitation department ... Arteries carry blood away from your heart while veins carry blood back to your heart. ... This is "used" blood which is poor in oxygen and rich in carbon dioxide. Arteries, which carry oxygen-rich blood and nutrients throughout the body ... IMPORTANT NOTE: This overview is provided for informational purposes only ... Apr 14, 2025 ... Problems with severe bleeding and blood clots may occur. ... the amount of hemoglobin (the protein that carries oxygen) in the red blood cells ... However, when a blood vessel that carries oxygen-rich blood and nutrients to the brain becomes blocked by something or ruptures, it causes poor oxygen supply. ... carry blood to your lungs to pick up oxygen. The mitral valve lets ... The aortic valve opens the way for oxygen-rich blood to pass from the left ... Decrease in hemoglobin (protein in red blood cells that carries oxygen) of ... Myelo is for informational purposes only and not a substitute for ...