Fill in the blank: The largest lymphatic organ is located in the upper left quadrant of the abdomen behind the stomach, beneath the diaphragm, deep to ribs 9, 10, and 11.

The largest lymphatic organ is the spleen.

The spleen plays a crucial role in filtering blood and managing the body’s immune response. Located in the upper left quadrant of the abdomen, it is tucked behind the stomach and protected by the ribs. Specifically, it lies deep to ribs 9, 10, and 11, making it relatively well-protected from external trauma.

In terms of function, the spleen helps to remove old or damaged red blood cells and filters out pathogens such as bacteria and viruses. This makes it essential for maintaining a healthy immune system and ensuring that the blood remains free of potential threats.