renal physiology Flashcards
1
Q
Which three processes control renal excretion of solutes and water?
A
Glomerular filtration Tubular secretion (active) Tubular reabsorption (active/passive)
2
Q
What three factors does GFR depends on?
A
RBF
hydrostatic pressure on Bowman’s capsule
no. of functional nephrons
3
Q
List 5 endogenous hormones that modulate renal vascular tone?
A
Catecholamines prostaglandins bradykinin angiotensin II vasopressin
4
Q
What effect does decreased afferent arteriolar resistance have on RBF & GFR?
A
both increase
5
Q
What effect does increased afferent arteriolar resistance have on RBF & GFR?
A
both decrease
6
Q
What effect does decreased efferent arteriolar resistance have on RBF & GFR?
A
RBF increases, GFR decreases
7
Q
What effect does increased efferent arteriolar resistance have on RBF & GFR?
A
RBF decreases, GFR increases
