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: Gynaecology & Obstetrics
[{'content': 'Ureter is identified at operation by : \nSelect and explain. \nA. Rich aerial plexus, B. Peristaltic movement, C. Retation to lumber ptexus, D. Accompanied by renal vein', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Peristaltic movement At operation ureter is recognized by : 1. Its pale glistening appearance 2. By a fine longitudinal plexus of vessels on its surface 3. More paicularly by its peristaltic movement 4. By palpation between finger and thumb as a firm cord which. when escapes. Absence of pulsation does not serve to identify a structure as ureter because veins and obliterated umblical aery are also non pulsatile.', 'role': 'assistant'}]