多项选择题
A.common carotid a. and its branches B.internal jugular v. and its tributaries C.hypoglossal n. D.vagus nerve E.accessory nerve
A.renal column B.renal pyramid C.renal cortex D.minor renal calices E.major renal calices
A.duodenum B.esophagus C.oral cavity D.pharynx E.stomach