I was having a bit of trouble with the kidney hormones and was wondering if anyone could help me out with the following (check if these are correct?)
a) Increase in ECF osmolarity, increase in ECF volume= Decrease aldosterone (to decrease ecf osm), increase vasopressin? (prioritising ecf osmolarity)
b) Decrease ECF osmoalrity, increase ECF volume= Increase aldosterone (increase ecf osm), decrease vasopressin (eliminate excess h2O)
c) Increase ECF osmolarity, decrease ECF volume= decrease aldosterone, increase vasopressin
d) Decrease ECF osmolarity, increase ecf volume= increase aldosterone, decrease vasopressin
I was most confused about a. There is the stimulus for increasing ECf osmolarity which is a stimulus for increasing vasopressin release, however an increase in ecf volume is supposed to decrease vasopressin release :/