The spleen is composed of this material that also surrounds veins and arteries.

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Quizplus · Accepted Answer

The spleen is mostly composed of lymphatic tissue, which also surrounds the veins and arteries in the organ. This lymphatic tissue is important for filtering and removing old or damaged blood cells and other cellular debris from the bloodstream. Bone marrow is not a major component of the spleen, and while blood does flow through the splenic vessels, it is not a primary component of the organ's structure.

The Spleen Is Composed of This Material That Also Surrounds