Common carotid aery is derived from: (A) Distal pa of 3rd Arch Aery and Cervical pa of Dorsal Aoa, (B) As a bud from 3rd Arch Aery, (C) Proximal pa of 3rd Arch Aery, (D) Truncus Aeriosus
Answer is C. The common carotid aery is derived, on either side, from pa of the third arch aery, proximal to the external carotid bud.The internal carotid aery is formed by the poion of the third arch aery distal to the budReference: Inderbir Singh Embryology; 10th edition; Page no: 260