This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Physiology
[{'content': 'Which of the following hormones is an example of a peptide hormone? \nSelect and explain. \nA. Parathormone, B. Adrenaline, C. Coisol, D. Thyroxine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Parathormone is a peptide hormone formed by the parathyroid glands; it raises the serum calcium levels when administered parenterally by causing bone resorption, reducing renal clearance of calcium and increasing efficiency of calcium absorption in the intestine.Ref: Ganong&;s review of medical physiology; 24th edition; page no: 377', 'role': 'assistant'}]