Question

Atrial natriuretic hormone/factor (ANF) secreted by atrial wall of our heart has exactly the opposite hormone secreted by zona glomerular
(a)ADH
(b)Aldosterone
(c)Androgen
(d)calcitonin

Answer 1

Hint: It is used in maintaining the amount of water conserved in the kidney. The high concentration of this enzyme will increase blood pressure. It is also called vasopressin.

Complete answer:
Antidiuretic hormone (ADH) is also called Vasopressin. It is a hormone that is synthesized as a peptide prohormone in neurons present in the hypothalamus and gets converted into arginine vasopressin (AVP). AVP has two important functions.
-It will increase the amount of solute free water that gets reabsorbed back into the circulation from the filtrate in the nephrons of the kidney tubules. Vasopressin will regulate the tonicity of our body fluids. It is released from the posterior pituitary in response to hypertonicity and will cause the kidney to reabsorb the solute-free water and will return it to the circulation from the tubules of the nephron, thereby returning the tonicity of the body fluids to normal. The consequence of this renal reabsorption of water is the formation of concentrated urine.
-AVP will constrict the arterioles, which will eventually raise the arterial blood pressure. If AVP gets released in high concentrations then it may raise the blood pressure by inducing moderate vasoconstriction.
-Some AVP may get secreted directly into the brain from the hypothalamus and might play an important role in social behavior, sexual motivation, and maternal responses to stress.
Vasopressin will induce the differentiation of stem cells into cardiomyocytes and thus promotes heart muscle homeostasis.
So, the correct answer is ‘ADH’.

Note: A similar substance to ADH is the lysine vasopressin (LVP) or lypressin, which has the same function in pigs, and it is the synthetic version that will be used in human AVP deficiency. However, it has been hugely replaced by desmopressin.