This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pharyngeal Arches, Subject name: Anatomy
Remnant of 1st arch aery ? 
Select and explain. 
A. Maxillary aery, B. Mandibular aery, C. Stapedial aery, D. No remnants
A: Maxillary aery
Answer: A: Maxillary aery 
Explanation: 1st arch aery remnant is Maxillary Aery 2nd arch aery remnant is Stapedial Aery 3rd arch aery - Rt and Lt common Carotid Aeries and proximal pa of ICA. 4th arch aery - Rt. side - Proximal poion of Rt. Subclan Aery Lt. side - Arch of Aoa (pa between Left subclan and left common carotid aery) 5th arch aery has no remnant. 6th arch aery - Left - Left pulmonary aery and ductus aeriosus Right - Right pulmonary aery.