Which of the following hormones is controlled by feedforward control?
(A) ADH (B) Insulin (C) Coicosteroids (D) Prolactin
(A) Ans. A. ADHOsmolarity and volume status are the two greatest factors that affect ADH secretion.However, a variety of other factors promote ADH secretion as well.These include angiotensin II, pain, nausea, hypoglycemia, nicotine, opiates, and ceain medications.ADH secretion is also negatively affected by ethanol, alpha-adrenergic agonists, and atrial natriuretic peptide.Ethanol's inhibitory effect helps to explain the increased diuresis experienced during intoxicated states as well as increased free water loss; without appropriate ADH secretion, more water is excreted by the kidneys.