Renal Physiology Flashcards
1
Q
Macula densa cells
A
FILL IN
2
Q
juxtaglomerular cells
A
secrete renin
3
Q
Principal cell
A
responsds to ADH
4
Q
Direct effect of aldosterone?
A
Early: increase # of epithelial Na channels
Late phase: increase # of Na/K ATPase pumps
Net effect: increase Na resorption and decrease Na excretion
5
Q
Effects of atrial natiuretic peptide?
A
- increase GFR, RBF
- decrease renin secretion
- aldosterone secretion
- decrease Na resorption
(basically counteracts RAAS)
6
Q
4 things proportional to effective circulating volume?
A
- cardiac output
- total peripheral resistance
- blood pressure
- extracellular fluid volume
7
Q
alpha-intercalated cell AKA dark cell
A
- functions to increase resorption of K when plasma K is low
- couples K+ resorption to H+ secretion
