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
Lymphatic drainage of anterior pa of nose is to 
Select and explain. 
A. Submandibular LN, B. Parotid, C. Pretracheal LN, D. Retropharyngeal LN
A: Submandibular LN
Answer: A: Submandibular LN 
Explanation: Lymphatic from the anterior half of the lateral wall pass to the submandibular nodes,and from the posterior half,to the retropharyngeal and upper deep cervical nodes. Ref BDC volume;3,Sixth edition