CH 26- Urine Formation

Helpfulness: 0
Set Details Share
created 8 years ago by chemistry_goo
46 views
Grade levels:
9th grade, 10th grade, 11th grade, 12th grade, College: First year, College: Second year, College: Third year, College: Fourth year
show moreless
Page to share:
Embed this setcancel
COPY
code changes based on your size selection
Size:
X
Show:
1

Urea

by product of amino acid metabolism

2

Creatinine

by product of creatine phosphate metabolism

3

Uric Acid

by product of nitrogenous base recycling

4

Urea, creatinine, Uric Acid, Dissolved Water

organic waste products (4)

5

4x

unavoidable water loss but can achieve ____ solute concentration of plasma

6

filtration

water and solute movement, pressure driven, flow from blood to capsule

7

filtration

mechanism based solely on size, solute must fit through fenestrations and ____ slits

8

Reabsorption

removal of water from filtrate into peritubular fluid

9

Reabsorption

removal of solute from filtrate into peritublular

10

Peritubular fluid

removal of water and solute goes where

11

Reabsorption

selective process simple diffusion or carrier mediated

12

Secretion

transport of substances into tubular fluid

13

Carrier Proteins

movement facilitated by substrate binding

14

Carrier Proteins

this proteins as usually unidirectional movement

15

Carrier Protein

distribution is different cross cell surface

16

Apical and Basal

2 surfaces use different carriers proteins

17

Carrier Protein

much like an enzyme this can saturate proteins

18

Glomerular Hydrostatic Pressure

blood pressure in glomerulus

19

50-60 mmHg

GHP pressure amount

20

15-18 mmHg

CsHP pressure amount

21

25-32 mmHg

BCOP pressure amount

22

NHP= GHP - CsHP

net pressure formula

23

Filtration pressure

difference btw NHP and BCOP

24

Capsular Hydrostatic Pressure

this pressure oppose GHP, results from resistance from nephron

25

10% (per min)

% amount of fluid arriving in blood is filtered into the capsular space, how fast?

26

Creatinine

what substance is NOT reabsorbed in the glomerular

27

99%

% of filtrate in the glomerular is ultimately reabsorbed

28

NFP

what controls the blood flow of the glomerulus?

29

Autoregulation, Hormonal, Autonomic

what controls the NFP for the blood flow of the glomerulus? (3)

30

Autoregulation

adjusting afferent & efferent arteriole diameter and capillary dilation

31

Dilation of afferent arteriole

relaxation of supporting cell and capillary dilation; part of autoregulation for GFR control

32

Constriction of efferent arteriole

causes increase in blood flow/pressure in glomerulus; part of autoregulation GFR

33

dilate

afferent arterioles constrict then efferent arterials ____

34

hormonal regulation

type of regulation; JG cells release renin

35

macula densa

in hormonal regulation; decrease tubular NaCl concentration sensed by ____

36

JG cells

in hormonal regulation; paracrine stimulate ______

37

Lungs

in hormonal regulation; angiotensin I is concerted to II in the ______?

38

BV and BP

in hormonal regulation; angiotensin II *in lung* elevates what? (2)

39

Efferent arterioles

in hormonal regulation; angiotensin II constricts what?

40

Nephron

in hormonal regulation; where does angiotensin II constrict efferent arterioles (GFR increase)

41

Angiotensin II constricting efferent arterioles

*in hormonal regulation* what causes GFR to increase?

42

Tubular fluid

in hormonal regulation a decrease in GFR causes a decrease flow in the_____

43

Increase in NaCl reabsorption

in hormonal regulation a decrease in the GFR which decrease flow of tubular fluid cause _______ . (increase)

44

renin

in hormonal regulation; this enzyme cause angiotensinogen to angiotensin I

45

More time spent in loop

hormonal regulation; why is there an increase in NaCl reabsorption due to a decrease in flow of tubular fluid?

46

Decrease in GFR = Decrease in Tubular flow = Increase in NaCl reabsorption (> loop time)

hormonal regulation flow (decrease in __ and so on)

47

angiotensinogen - angiotensin I

in hormonal regulation, renin causes?

48

homeostasis disturbed

what causes the decrease in GFR (disturbed)

49

renin

when homeostasis is disturbed and there is a decrease in GRF what is released?

50

Angiotensin

after renin is release due to a disturbance in homeostasis what is activated

51

BP and BV elevate

after angiotensin is activated by renin due to disturbed homeostatsis what happens?

52

Homeostasis restored

and elevation of BP and BV due to angiotensis activated from renin what happens?

53

JG cells

what cells release renin

54

decrease

releases of renin causes _____ in glomerular bp

55

osmotic concentration

renin release causes this to decrease in tubular fluid at *macula densa*

56

macula densa

where does the osmotic concentration of tubular fluid decrease from release of renin

57

angiotensin II

constricts efferent arterioles

58

Angiotensin II

stimulates reabsorption of Na and water at PCT

59

PCT

where to angiotensin stimulate reabsorption of Na and water