To which organ system tonsil, spleen and thymus belong to?
Lymphatic system
The tonsils, thymus, spleen lymph nodes and vescicles all belong to lymphatic system.
The lymphatic system is a network of tissues and organs that help rid the body of toxins, waste and other unwanted materials.
The primary function of the lymphatic system is to transport lymph, a fluid containing infection-fighting white blood cells, throughout the body.