Nasal Cavity Blood Supply — MFDS Part 1 MCQ

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ModerateAnatomy (Head & Neck)Nasal Cavity Blood SupplyMFDS Part 1

The posterior part of the lateral wall of the nasal cavity is supplied predominantly by posterior lateral nasal branches of which artery?

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Correct answer: C — Sphenopalatine artery

The correct answer is C. The sphenopalatine artery, a terminal branch of the maxillary artery, enters the nasal cavity through the sphenopalatine foramen. Its posterior lateral nasal branches provide the predominant supply to the posterior lateral nasal wall and turbinates. The ophthalmic artery contributes through the anterior and posterior ethmoidal arteries, particularly to superior and anterior regions. Facial artery branches contribute to the anterior nasal cavity and external nose. The ascending pharyngeal artery mainly supplies the pharynx and adjacent deep structures, while the posterior superior alveolar artery principally supplies the maxillary molar teeth, supporting tissues and maxillary sinus.

Reference: MacArthur FJD, McGarry GW. The arterial supply of the nasal cavity. European Archives of Oto-Rhino-Laryngology. 2017;274:809–815. https://pubmed.ncbi.nlm.nih.gov/27568352/