1) The tonsils are the simplest lymphoid organs and are found at the entrance to the pharynx. 2) The appendix, tonsils, and Peyer #x27;s patches are examples of lymphoid tissues. 3) Highly specialized lymph capillaries called lacteals are present in the villi of the intestinal mucosa. 4) The thoracic duct of the lymphatic system empties into the left subclavian vein. 5) Tonsils have blind-ended structures called crypts. 6) Hassall #x27;s corpuscles are always found in the lighter-colored medullary regions of the thymus. 7) The white pulp of the spleen forms cuffs around the central arteries. 8) Lymphatic trunks are formed from the union of the largest collecting vessels.
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