regulation of water, Na and ECF volume Flashcards
1
Q
sensible loss of normal fluid
A
kidneys 1-2ml/kg/hour
2
Q
insensible loss of fluid
A
evaporation from skin
exhalation from the lungs
faeces
3
Q
how do the kidneys regulate sensible water loss
A
concentrate urine if animal dehydrated
produce copious amounts of dilute urine when there is an excess of water
4
Q
what is the normal fluid intake
A
2ml/kg/hr or 50ml/kg/day
5
Q
what is normal urine output
A
1ml/kg/hour
25/kg/day
6
Q
what do receptors respond to changes in
A
osmolarity
plasma volume
blood pressure
7
Q
what is osmolarity regulated by
A
osmoreceptors in the hypothalamus
8
Q
what is ADH regulated by
A
osmolarity
blood volume
9
Q
regulation of NA
A
intake not regulated all ingested NA is absorbed
10
Q
what does greater urine specific gravity mean
A
greater concentration of urine
