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Anatomy & Histology · single question

Which arteries supply the lower lip?

  1. Inferior labial artery (facial artery) and mental artery (inferior alveolar artery)
  2. Superior labial artery and infraorbital artery
  3. Buccal artery and inferior alveolar artery
  4. Lingual artery and sublingual artery
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Correct answer: A. Inferior labial artery (facial artery) and mental artery (inferior alveolar artery)

Lower lip is supplied by: (1) inferior labial artery (branch of facial artery), and (2) mental artery (terminal branch of inferior alveolar artery via mental foramen). Source confirms: 'Labial y mental.'
  • A. CORRECT. Inferior labial artery + mental artery supply the lower lip.
  • B. Superior labial artery and infraorbital supply the UPPER lip and midface.
  • C. Buccal artery supplies buccal mucosa; the IAN's terminal branch (mental) is relevant to the lip, not the IAN itself.
  • D. Lingual and sublingual arteries supply the tongue and floor of mouth.

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