Nephron Physiology Flashcards
1
Q
Where does PTH allow for Phosphate Excretion?
A
Early PCT
2
Q
Where does AT2 stimulate Na+/H+ exchange?
A
Early PCT
3
Q
Role of Thin ascending loop?
A
Make Urine Hypertonic
4
Q
Role of Thick ascending loop?
A
Make Urine Hypotonic
5
Q
Receptor in Thick ascending Loop?
A
NKCC
6
Q
Makes urine most dilute (hypotonic)?
A
Early DCT
7
Q
Where does PTH induced Ca2+ absorption occur?
A
Early DCT
8
Q
ADH—acts at V2 receptor to do?
A
insertion of aquaporin H2O channels on apical side.
9
Q
Principal Cells regulates
A
K+ and Na+
10
Q
å-Intercalated cells secrete? Reabsorb?
A
Acid (H+)
Bicarb
11
Q
Highest TF/P=?
A
PAH
12
Q
Which substances have a TF/P>1?
A
PAH, Inulin, Creatinine, Urea, Cl-
13
Q
Lowest TF/P?
A
Glucose
14
Q
TF/P closest to 1?
A
Na and K+
15
Q
What three things increase Renin? Who is it sensed by?
A
Decreased BP (JG cells) Decreased Na+ delivery (Macula densa cells) Increased Symp. TOne (B1 receptors)