Glomeruli Filtration

Question 1

processes of urine production

Answer 1

1. glomerular filtration to bowmans capsule
2. tubular re-absorption by pertubular caps
3. tubular secretion by caps to tubular lumen

Question 2

renal blood flow

Answer 2

vol of blood delivered to kidneys for excretion, nutrients, affect filtration rate, modify rate of reabsorption, concentrate or dilute urine

Question 3

glomerular filtration

Answer 3

filtration of plasma from glomerular caps into bowman’s capsule
-starts urine formation

Question 4

renal plasma flow

Answer 4

vol of blood plasma delivered to kidneys

Question 5

determinants of glomerular filtration rate

Answer 5

1. filtration fraction coefficient
2. net filtration force

Question 6

filtration fraction

Answer 6

fraction of plasma fitlered by glomerular caps

Question 7

filtration fraction coefficient determiend by

Answer 7

1. capillary wall permeability via endothelium, BM, and podocytes
2. filtration surface area via mesangial cells

Question 8

forces favoring filtration

Answer 8

glomerular hydrostatic P
-affected by systemic BP and resistance of arterioles

Question 9

forces opposing filtration

Answer 9

1. glomerular colloid osmotic P
2. bowman’s capsule P

affected by arterial plasma colloid osmotic P and filtration fraction

Question 10

factors that dec GFR

Answer 10

1. vasoconstrict afferent arteriole so dec flow into glomerulus
2. vasodilate efferent arteriole so more can get out

Question 11

factors that inc GFR

Answer 11

1. vasoconstrict efferent so back up filtrate
2. vasodilate afferent so more entering