![]() ![]() Along with the submandibular lymph node, the submental lymph node is the other member of the superficial horizontal ring. The submental lymph node (Choice A) is incorrect. Finally, the deep cervical vertical chain consists of the jugulodigastric, jugular-omohyoid, and other cervical chain nodes. The deep horizontal ring includes retropharyngeal, paratracheal, pretracheal, prelaryngeal, and infrahyoid nodes. The superficial horizontal ring contains the submental and submandibular lymph nodes, and slightly deeper parotid nodes which include superficial deep preauricular nodes and retroauricular mastoid occipital nodes. ![]() There is a horizontal ring of superficial nodes, a horizontal ring of deep nodes, and a pair of vertical chains of deep cervical nodes (bilateral). The general schematic of lymph node chain layout can be grouped into three main chains. In our example, a maxillary tooth could drain to vessels through the infraorbital canal and then pass into a submandibular node, next passing to a jugulodigastric node of the deep cervical nodes. The submandibular nodes then drain to nodes of the deep cervical chain, paralleling the right and left internal jugular veins. Structures that drain to it include the submental nodes (which are also part of the superficial horizontal ring), cheek, nose, upper lip, maxillary teeth, vestibular gingivae, the hard palate mucosa and gingivae, posterior floor of the mouth, and the lateral aspects of the anterior two thirds of the tongue. The submandibular lymph nodes are part of the superficial horizontal ring of lymph drainage. Through which chain of lymph nodes will a severe infection of a maxillary tooth abscess drain? Sample NBDE I Practice Questions Question 1. Dental Anatomy and Occlusion QID 32946 These are free sample practice questions taken from the BoardVitals NBDE I Question Bank. ![]()
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