This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Anatomy
The lymphatic drainage to central pa of the lip is 
Select and explain. 
A. Submandibular node, B. Submental nodes, C. Deep cervical nodes, D. Jugulodiagastric nodes
B: Submental nodes
Answer: B: Submental nodes 
Explanation: Submental lymph nodes: these are three or four nodes situated across the midline below the chin in the submental triangle. Lymphatics of the central pa of the lower lip drain to the submental nodes,the lymphatics from the rest of the lower lip pass to the submandibular nodes. REF.BDC VOL.3,FIFTH EDITION