This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
[{'content': "Sternocleidomastoid is supplied by all of the'following aeries except? \nSelect and explain. \nA. >Occipital, B. >Posterior auricular, C. >Thyrocervical trunk, D. >Superior thyroid", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Posterior auricular According to the aicle-"The Blood Supply of the Sternocleidomastoid Muscle and Its Clinical Implications" Antonius Kierner, MD; Main Aigner, MD; Inngard Zelenka, MD; Gunther Riedl; Main Burian, MD Upper third - supplied by branches of the occipital aeryMiddle third - supplied by branch of the superior thyroid aery (42%), the external carotid aery (23%),or branches of both (27%)Lower third - supplied by a branch arising from the suprascapular aery According to Gray\'s Anatomy 40/e p441 upper third is supplied by both the occipital aery and posterior auricular aery; middle third by superior thryroid aery and the lower third by the suprascapular aery.', 'role': 'assistant'}]