Renal/Respiratory Flashcards
What stimulates the release of ADH in the renal system?
↑ ECF Osmolarity
↓ECF Volume
What effect does ADH have on the nephron?
It increases water permeability in the distal nephron and causes synthesis and insertion of apical aquaporins
What is the effect of PTH on Ca2+? Where does this occur?
↑ Ca2+ reabsorption in the DT/CD
What effect does PTH have on PO43-?
It regulates PO43- transport in PT
↑ PO43- excretion
What effect does Angiotensin II have on the nephron?
↑ aldosterone release
affects Na+ reabsorption in the PT
↑ vasoconstriction
What are the effects of Aldosterone on the nephron?
↑H+ secretion
↑ Na+ reabsorption in CD
↑ENaC
↑conductivity, insertion, and synthesis of apical K+ channels
ECF major cations
Na+
ECF major anions
Cl-, HCO3-
ICF major cations
K+ Mg+
ECF major anions
PO3-4
Osmolarity of the Thick AL
hyperosmotic
Osmolarity of the PT
Isomolar
Osmolarity of the DT
Hypo-osmolar
Osmolarity in DL
Hyperosmolar
What effect does ADH have on urine concentration/dilution?
ADH can make urine more concentrated
