This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nose and paranasal sinuses, Subject name: ENT
Nasal mucosa is supplied by: 
Select and explain. 
A. only external carotid aery, B. Only internal carotid aery, C. Mainly external carotid aery, D. Mainly internal carotid aery
C: Mainly external carotid aery
Answer: C: Mainly external carotid aery 
Explanation: Both the internal and external carotid aery supply the nose but main aery is the external carotid aery. Ref.Dhingra5/e p 189