Glomerular Filtration Flashcards Preview

Physiology > Glomerular Filtration > Flashcards

Flashcards in Glomerular Filtration Deck (13):
1

What are the parts of the Nephron in order?

Glomerulus, Bowman's capsule, proximal tubule, loop of henle, distal tubule, collecting duct

2

What is the most important determinant of GFR?

renal blood flood, but also aterial pressure and renal vascular resistance but they can be regulated by the contraction and dialition of afferent and efferent arterioles

3

If BP falls

afferent arteriole dialates

4

If BP rises

afferent arteriole contricts

5

What does angiotensin 2 do, in terms of low blood pressure?

contricts efferent arteriole, so that GFR is not reduced
so if someone has hypotension, they would still be able to have normal GFR due angiotension 2

6

what does prostaglandins do in terms of low blood pressure

dilates afferent arteriole

7

What are renal constrictors?

Aniotensin 2 - efferent arteriole only
catechlamine

8

What are renal vasodialtors

prostaglandins
AN
pregnancy
high protein diets

9

GFR =

UV * Ucreat/Pcreat

10

Filtration =

GFR * plasma concenttration

11

Excretion =

Urine flow rate * urine concenttration

12

GFR =inverse of

1/Pcreat same as 1/serum creatinine

13

lower the plasma creatinine, the higher the

GFR