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
Time about milk secretion 
Select and explain. 
A. Neuroendocrine pa of post pituitary is involved, B. Secretion by contraction of lactiferous sinus oxytocin, C. Vasopressin hormone is involved, D. Affected by emotion
A: Neuroendocrine pa of post pituitary is involved
Answer: A: Neuroendocrine pa of post pituitary is involved 
Explanation: Posterior pituitaryThe posterior lobe of the pituitary gland; the neurohypophysis.A preparation of animal posterior pituitary having the pharmacological actions of its hormones, oxytocin, and vasopressin; used mainly as an antidiuretic in the treatment of diabetes insipidus and as a vasoconstrictor.Ref: Ganong&;s review of medical physiology; 24th edition; page no:-311