Read the following passage and answer if the question is true or false.
Passage: Like the thymus, the spleen possesses only efferent lymphatic vessels. The spleen is part of the lymphatic system. Both the short gastric arteries and the splenic artery supply it with blood.

Question: is the spleen part of the circulatory system?

Is the answer True or False? Respond with only "True" or "False" and no additional text.
False. The spleen is part of the lymphatic system, not the circulatory system.