Which of the following structures drains primarily into the submental lymph nodes?
- A Lateral border of the tongue
- B Central part of the lower lip and the tip of the tongue ✓
- C Palatine tonsil
- D Auricle and external acoustic meatus
Correct answer: B. Central part of the lower lip and the tip of the tongue
Explanation
Submental nodes lie in the submental triangle below the mylohyoid and receive lymph from the central lower lip, the floor of the mouth anteriorly, the chin, and the tip of the tongue. The lateral tongue drains to submandibular and jugulodigastric nodes, which kills option A. The tonsil drains mainly to the jugulodigastric node, and the auricle drains to parotid and mastoid nodes.
Reference: Gray's Anatomy for Students, 4th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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