Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
5 Cards in this Set
- Front
- Back
Tubular Actions of Angiotensin II
|
1.) Enhance Sodium-hydrogen exchanger in the proximal tubule and the Thick Ascending Limb --> Increased sodium reabsorption
2.) Enhanced Epithelial Sodium Channels on the collecting duct --> Increased sodium reabsorption 3.) Enhance the Tubular Glomerular Filtration NET EFFECT: Decreased Sodium Excretion |
|
SNS Activity
|
1.) Increased Renal Vascular Resistance
2.) Increased Renin Release 3.) Increased Tubular Sodium Reabsorption NET EFFECT: Decrease Sodium Excretion |
|
Actions of AVP (ADH)
|
1.) Increased water retention by adding additional AQP II channels to the apical surface of the distal nephron (Perhaps the Collecting Duct?)
2.) Increase Sodium/Potassium/Chloride cotransport in the Thick Ascending Limb 3.) Increase the epithelial sodium channel open probability in the collecting duct OVERALL: Helps generate hypertonic medullary interstitium NET EFFECT: Decreased Sodium Excretion |
|
Action of ANP
|
1.) Renal vasodilation - increase Cortical Blood Flow and increased Glomerular Filtration Rate; Increase medullary blood flow which causes medullary washout of the interstitium
2.) Increase sodium load to Proximal Tubule and thick ascending Limb - causing increased sodium excretion OVERALL: Decrease ANP release from atria - Decreases effective circulating Volume NET EFFECT: Decrease sodium excretion when ANP is low!!! |
|
Moo
|
Moo
|