Renal Blood Flow and GFR

Question 1

Change in blood flow = afferent or efferent arterioles constrict or dilate to maintain….

Answer 1

MAP

Question 2

Afferent or Efferent arterioles constricting or dilating in response to change in blood flow, to maintain MAP is known as

Answer 2

Autoregulation

Question 3

GFR depends on a constant…

Answer 3

Arterial BP

Question 4

What MAP value can the afferent and efferent arterioles no longer compensate at

Answer 4

Less than 70mmHg

Question 5

What is the compensatory mechanism for a decreased blood flow to the kidneys

Answer 5

Efferent arteriole constriction

Question 6

Afferent arteriole constriction causes

Answer 6

Decreased blood flow to the kidneys…. decreased glomerular filtrate

Question 7

Afferent arteriole constriction causes decreased flow to the kidneys and decreased glomerular filtrate can be caused by

Answer 7

NSAIDS

Question 8

• Reabsorption of 50-55% water
• Sodium, glucose, phosphate and amino acids
• Increased by Renin Angiotensin Aldosterone System

Answer 8

Proximal tubule

Question 9

• Reabsorbs sodium, chloride, magnesium and calcium
• Very little water resorption

Answer 9

Loop of henle

Question 10

Relatively impermeable to water but reabsorb
sodium and chloride

Answer 10

Distal tubule