Dehydration increases the plasma concentration of all the following hormones EXCEPT
D. i.e. (Atrial natriuretic peptide) (729- 30- Ganong 22nd) (669-70- Ganong 23rd)DEHYDRATION - loss of water from the body causes moderate decrease in ECF volume* When ECF volume is decreased, BP falls, Glomerular capillary pressure declines and the GFR therefore falls reducing the amount of Na+ filtered. Tubular reabsorption of Na+ is amount, in part because the secretion of aldosterone is increased.* Na++ excretion is decreased within a few minute and this rapid change in Na+ excretion occurs in adrenalectomiced subject. It is probably due to hemodynamic changes an possibly to decreased ANP secretion.
Kidneys and Body Fluids
Vasopressin
Aldosterone
Angiotensin II
Atrial natriuretic peptide
Atrial natriuretic peptide