Renal physio Flashcards Preview

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Flashcards in Renal physio Deck (43):
1

Parts of kidney from medial to lateral

Pelvis --> calyces --> papilla --> medulla --> cortex --> capsule

2

Renal circulation (arterial)

Renal artery >> segmental >> interlobar >> arcuate >> interlobular (radial) >> afferent arteriole >> glomerular capillaries >> efferent arteriole

3

Renal circulation (venous)

Efferent arteriole >> peritubular capillaries or vasa recta >> interlobular vein >> arcuate vein >> interlobar vein >> renal vein

4

Only capillaries in the body that leads to arterioles

Glomerular capillaries

5

Capacity of urinary bladder

600mL

6

Main charge barrier

Basement membrane negatively charged

7

Cells of capillary endothelium

Podocytes

8

Secrete renin and found on the walls of afferent arterioles

juxtaglomerular cells

9

Monitor sodium concentration in DCT

Macula Densa

10

Highly fenestrated and secrete nitric oxide and endothelin

Capillary endothelium

11

JG cell found in the ________

Afferent arteriole

12

Substance which is filtered only

Inulin
Creatinine

13

Filtered and completely reabsorbed

Glucose
Amino Acids

14

Filtered and secreted

PAH
Organic acid and bases

15

Hormone that will preserve GFR

Angiotensin II

16

Percentage of solute reabsorbed is held constant

Glomerulotubular balance

17

Which mechanism maintains GFR at a constant 125ml/min

Macula Densa Feedback
Tubuloglomerular feedback

18

Which substance vasodilate afferent arteriole

Nitric oxide

19

If BP is high in which there is increased GFR, macula densa increases secretion of ________ which constricts the ________ arteriole

Adenosine
Afferent arteriole

20

Micturition center is found in the _____

Pons

21

Thirst center found in the ________

Anteroventral wall of 3rd ventricle and Preoptic nuclei

22

Countercurrent multiplier

Loop of Henle
Creates the corticopapillary osmotic gradient

23

Counter current exchanger

Vasa recta

24

Substance used to estimate renal blood flow and renal plasma flow

PAH

25

Substance whose clearance is used to estimate GFR

Inulin
BUN Crea

26

Factors that shift K into the cells

Insulin
Aldosterone
B adrenergic agonist
Alkalosis

27

In the DCT, K is secreted by

Principal cells

28

Acidosis results to hyper or hypocalcemia?

Hypercalcemia

29

Where final urine output and urine concentration is determined

Collecting duct

30

Which substance determine osmolarity at the tip of loop of Henle

Urea

31

Intercalated cells in the DCT secrete

H+

32

Powerhouse of nephron

PCT

33

Levels of _______ determine final urine output and urine concentration

ADH
Vasopressin

34

Bowman space oncotic pressure = ?

0

35

Bowman space hydrostatic pressure is increased by ?

Urinary tract obstruction e.g. Stones

36

Diluting segment

Thick asc limb

37

Site of action of thiazide diuretics

Early distal tubule

38

Site of action of loop diuretics

Thick ascending limb of loop of Henle

39

Cortical diluting segment

Early distal tubule

40

Which hormone inhibits phosphate reabsorption in PCT

PTH

41

Gradient time transport is exhibited by

All passively transported solutes - Cl urea
Some actively transported solutes - Na in PCT

42

Intrinsic ability of tubules to increase their reabsorption rate when there is increased solute load

Glomerulotubular balance

43

Functional and structural unit of kidney

Nephron