Which of the following is the largest lymphatic organ?

• A. Lymph node
• B. Spleen
• C. Thymus
• D. Tonsil

Answer: (B)

Verified step by step guidance

1. Understand the function and location of each lymphatic organ listed in the options: lymph nodes, spleen, thymus, and tonsils.
2. Recall that the spleen is the largest lymphatic organ in the human body. It is located in the upper left quadrant of the abdomen and plays a key role in filtering blood, recycling red blood cells, and supporting immune function.
3. Compare the sizes of the organs: lymph nodes are small, bean-shaped structures scattered throughout the body; the thymus is located in the chest and is relatively small, especially after puberty; tonsils are small clusters of lymphatic tissue located in the throat; the spleen is significantly larger than these organs.
4. Review the anatomical and physiological significance of the spleen to confirm its role as the largest lymphatic organ. It is involved in both the immune response and the removal of old or damaged blood cells.
5. Conclude that the spleen is the correct answer based on its size and function compared to the other lymphatic organs listed.