cold war in British English. See all translations. uk â /ËkÉÊld ËwÉËr/ us â /ËkoÊld ËwÉËr/. âº a state of extreme unfriendliness existing between countries, especially countries with opposing political systems, that expresses itself not through fighting but through political pressure and threats.
The spleen is the largest organ of the lymphatic system. Its primary function is to filter blood of damaged cells, cellular debris, and pathogens. Like the thymus, the spleen houses and aids in the maturation of lymphocytes. Lymphocytes destroy pathogens and dead cells in the blood.
Which organ cleans the blood? The glomerulus and the tubule are two parts of a larger filtration unit called the nephron. The nephron is the working unit of the kidney. Each kidney contains up to a million nephrons, which filter a combined 120 to 150 quarts of blood a day, creating one or two quarts of urine.