Hemolytic anaemia involves abnormal breakdown of red blood cells in which sites?

Hemolytic anaemia involves abnormal breakdown of red blood cells in which sites?

• A. In the bloodstream or the spleen
• B. In the liver
• C. In the lymph nodes
• D. In the bone marrow

Answer: (A)

Hemolytic anaemia happens when red blood cells are destroyed faster than they can be made. This destruction can occur in two main places: inside the blood vessels (intravascular hemolysis) or outside the vessels, mainly in the spleen where macrophages remove damaged cells (extravascular hemolysis). The spleen is the primary site for clearing aging or abnormal red cells, so destruction there is a key feature. The liver can also participate in clearance, but it’s not the main site. The bone marrow is where new red cells are produced, not destroyed, and lymph nodes aren’t a typical site for RBC breakdown. So, the relevant sites are the bloodstream and the spleen.

Hemolytic anaemia happens when red blood cells are destroyed faster than they can be made. This destruction can occur in two main places: inside the blood vessels (intravascular hemolysis) or outside the vessels, mainly in the spleen where macrophages remove damaged cells (extravascular hemolysis). The spleen is the primary site for clearing aging or abnormal red cells, so destruction there is a key feature. The liver can also participate in clearance, but it’s not the main site. The bone marrow is where new red cells are produced, not destroyed, and lymph nodes aren’t a typical site for RBC breakdown. So, the relevant sites are the bloodstream and the spleen.