This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neuroanatomy, Subject name: Anatomy
Lower lip blood supply: 
Select and explain. 
A. Angular artery, B. Lateral nasal artery, C. Labial artery, D. Greater palatine artery
B: Lateral nasal artery
Answer: B: Lateral nasal artery 
Explanation: Ans. B Labial nasal arteryRef: Gray's Anatomy 41st ed. P 498* External carotid artery gives rise to facial artery branch, which has several branches over face.* Superior labial-supplies to upper lip and antero-inferior part of nasal septum.* Inferior labial-supplies to lower lip.* Lateral nasal-to the ala and dorsum of nose.* Angular-supplies the lacrimal sac and orbicularis oculi.