In this organ, the marginal zone separates white pulp from red pulp.
Damage to this organ is indicated by Kehr's sign, which involves pain in the left shoulder. Reduced function of this organ is characterized by Howell- Jolly bodies. The arterioles of this organ are surrounded by cuffs of lymphocytes known as periarteriolar lymphoid sheaths. This organ is enlarged in patients with mononucleosis. In this organ, the marginal zone separates white pulp from red pulp. This organ is located in the left upper quadrant of the abdomen, and its function is to destroy worn-out red blood cells. For 10 points, name this organ that can rupture.
Damage to this organ is indicated by Kehr's sign, which involves pain in the left shoulder.
{spleen}