This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: ENT
Lymphatic drainage of orpharynx is mainly through? 
Select and explain. 
A. Superficial cervical lymph nodes, B. Submandibular nodes, C. Jugulodigastric node, D. Jugulo-omohyoid nodes
C: Jugulodigastric node
Answer: C: Jugulodigastric node 
Explanation: Ans. is 'c' i.e., Jugulodigastric nodes Deep cervical lymph nodes are divided into two groups :- (i) jugulodigastric, and (ii) jugulo-omohyoid. Lymphatics from oropharynx drain into jugulodigastric nodes. Lymphatic drainage of pharynx Lymphatic drainage of pharynx may be :? 1. Nasopharynx Nasopharynx drains into upper deep cervical nodes either directly or indirectly through retropharyngeal or parapharyngeal nodes. Nasopharynx also drains into spinal accessory chain of nodes in the posterior triangle of the neck. 2. Oropharynx Lymphatics from the oropharynx drain into upper jugular paicularly the jugulodigastric (tonsillar) nodes. The soft palate, lateral and posterior pharyngeal walls and the base of tongue also drain into retropharyngeal and parapharyngeal nodes and from there to the jugulodigastric and posterior cervical group. 3. Hyphopharynx Pyriform sinus drains into upper jugular chain & then to deep cervical group of lymph nodes. Postcricoid region drains into parapharyngeal and paratracheal group of lymph nodes. Posterior pharyngeal wall drains into parapharyngeal lymph nodes and finally to deep cervical lymph nodes.