Anatomy & Histology · single question
Which arteries are the PRIMARY blood supply to the lower lip?
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Correct answer: D. Inferior labial artery (facial a. branch) and mental artery
The lower lip is primarily supplied by the inferior labial artery (branch of facial artery) and the mental artery (terminal branch of inferior alveolar artery).
- A. The lingual artery primarily supplies the tongue, not the lower lip.
- B. The inferior alveolar artery supplies mandibular teeth and gives the mental branch — it supplies the lip indirectly via the mental artery, not directly.
- C. The buccal artery supplies the buccinator muscle and cheek, not the lower lip.
- D. CORRECT. Lower lip blood supply = inferior labial artery (from the facial artery) + mental artery (from inferior alveolar). The facial artery's inferior labial branch is the dominant supply to the lower lip.
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