This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pharynx, Subject name: ENT
Lymphatic drainage of oropharynx is mainly through 
Select and explain. 
A. Superficial cervical lymph nodes, B. Submandibular nodes, C. Jugulodigastric nodes, D. Jugulo-omohyoid nodes
C: Jugulodigastric nodes
Answer: C: Jugulodigastric nodes 
Explanation: Lymphatics from oropharynx drain into the upper jugular chain, paicularly the jugulodigastric ( tonsilar) node. Some pas drain to the posterior cervical group also. The base of the tongue may drain bilaterally. Lymphatic drainage of the nasopharynx - upper deep cervical nodes. (Ref: Diseases of Ear, Nose and Throat, PL Dhingra; 7th edition, pg no. 271)