lungnahringrás

Lungnahringrás is a term of Icelandic origin that translates to "lung circulation" or "pulmonary circulation." It refers to the part of the circulatory system that carries deoxygenated blood from the right ventricle of the heart, through the lungs, and back to the left atrium. This process is distinct from the systemic circulation, which supplies blood to the rest of the body.

In lungnahringrás, deoxygenated blood leaves the right ventricle and enters the pulmonary artery. This artery branches and carries the blood to the lungs, where it is distributed to a vast network of capillaries surrounding the alveoli. Within the alveoli, gas exchange occurs: carbon dioxide diffuses from the blood into the air to be exhaled, and oxygen diffuses from the inhaled air into the blood.

Once oxygenated, the blood returns to the left atrium of the heart via the pulmonary veins. This completed cycle is crucial for replenishing the blood's oxygen supply and removing carbon dioxide, thus sustaining cellular respiration throughout the organism. The low-pressure system of lungnahringrás contrasts with the high-pressure system of systemic circulation, reflecting the different demands placed on each part of the circulatory network.