alveolendurchblutung

Alveolendurchblutung refers to the blood flow through the pulmonary alveoli, the tiny air sacs in the lungs where gas exchange occurs. This process is crucial for delivering oxygen from the inhaled air to the bloodstream and removing carbon dioxide from the blood to be exhaled. The pulmonary circulation system is responsible for this blood flow, with the right ventricle of the heart pumping deoxygenated blood to the lungs. This blood then travels through the pulmonary arteries, which branch into smaller arterioles and eventually capillaries that surround each alveolus. The thin walls of the alveoli and capillaries allow for efficient diffusion of gases. Oxygen diffuses from the alveoli into the capillaries, binding to hemoglobin in red blood cells, while carbon dioxide diffuses from the capillaries into the alveoli to be expelled from the body. The oxygenated blood then returns to the left atrium of the heart via the pulmonary veins. Alveolar blood flow is tightly regulated and can be influenced by factors such as gravity, lung volume, and the body's metabolic needs. Conditions that impair alveolendurchblutung, such as pulmonary embolism or severe lung disease, can lead to hypoxemia (low blood oxygen levels) and other respiratory complications. Understanding alveolendurchblutung is fundamental to comprehending lung function and diagnosing and managing various pulmonary disorders.