3b Microanatomy Kidney Model

1

renal capsule, protection of kidney

2

renal cortex, filters blood

3

renal medulla, filtration of blood by nephrons

4

renal pelvis, transports urine from major calyx to ureter

5

renal calyx, transports filtrate from papillary duct and sends urine to renal pelvis

7

renal sinus, holds/supports structures that enter/exit kidney

8

renal column, pathway for blood vessels to/from nephron

A (identification only)

longitudinal section of kidney

9

Bowman’s capsule, collects filtrate from glomerulus and sends it to proximal convoluted tubule

10

glomerulus, filters blood to form filtrate

11 (not on model, red vessel under 10)

cortical radiate artery, transports blood from arcuate artery to afferent arteriole

12

cortical radiate vein, transports blood from vasa recta/pertibular capillaries to arcuate vein

13

renal corpuscle, filters blood to form filtrate

14

proximal convoluted tubule, transports filtrate from glomerulus to descending loop of Henle

15

thin loop of Henle, transports filtrate from proximal convoluted tubule to distal convoluted tubule

16

distal convoluted tubule, transports filtrate from ascending loop of Henle to collecting duct

18

collecting tubule, transports filtrate from distal convoluted tubule to papillary duct

19

papillary duct, transports filtrate from collecting duct and sends urine to minor calyx

20

vasa recta, transports blood from efferent arterioles through renal medulla back to cortical radiate vein

21

arcuate vein, transports blood from cortical radiate vein to interlobar vein

22 (not labeled, red vessel above 21)

arcuate artery, transports blood from interlobar artery to cortical radiate artery

23

renal medulla, filtration of blood by nephrons

24

renal cortex, filters blood

25

renal capsule, protection of kidney

C (identification only)

section of kidney lobe

D (identification only)

kidney nephron

27

renal corpuscle, filters blood to form filtrate

26

proximal convoluted tubule, transports filtrate from glomerulus to descending loop of Henle

34

descending loop of Henle, transports filtrate from proximal convoluted tubule to ascending loop of Henle

38

thin loop of Henle, transports filtrate from proximal convoluted tubule to distal convoluted tubule

35

ascending loop of Henle, transports filtrate from descending loop of Henle to distal convoluted tubule

29 (white, not yellow tube)

distal convoluted tubule, transports filtrate from ascending loop of Henle to collecting duct

30

cortical radiate vein, transports blood from vasa recta/pertibular capillaries to arcuate vein

31

cortical radiate artery, transports blood from arcuate artery to afferent arteriole

32

arcuate artery, transports blood from interlobar artery to cortical radiate artery

33

arcuate vein, transports blood from cortical radiate vein to interlobar vein

37

pertibular capillaries, transport blood from efferent arterioles to cortical radiate vein

E (identification only)

nephron with renal corpuscle interior and renal tubule cross section

39

afferent arteriole, transports blood from cortical radiate artery to glomerulus

40

glomerulus, filters blood to form filtrate

41

Bowman’s capsule, collects filtrate and sends it to proximal convoluted tubule

49

efferent arteriole, transports blood from glomerulus to vasa recta/peritubular capillaries

42

proximal convoluted tubule, transports filtrate from glomerulus to descending loop of Henle

43

descending loop of Henle, transports filtrate from proximal convoluted tubule to ascending loop of Henle

44

thin loop of Henle, transports filtrate from proximal convoluted tubule to distal convoluted tubule

45

ascending loop of Henle, transports filtrate from descending loop of Henle to distal convoluted tubule

48

distal convoluted tubule, transports filtrate from ascending loop of Henle to collecting duct

46

basement membrane, regulates movement of substances b/w filtrate and surrounding tissues

47

brush border, increase surface area for reabsorption

F (identification only)

renal corpuscle interior

55

proximal convoluted tubule, transports filtrate from glomerulus to descending loop of Henle

50

distal convoluted tubule, transports filtrate from ascending loop of Henle to collecting duct

51

efferent arteriole, transports blood from glomerulus to vasa recta/pertibular capillaries

52

vascular pole, allows blood to enter/exit glomerulus

53

glomerulus, filters blood to form filtrate

54

Bowman’s capsule, collects filtrate and sends it to proximal convoluted tubule

56

podocytes, help form filtration membrane of renal corpuscle

57

afferent arteriole, transport blood from cortical radiate artery to glomerulus

58

macula densa, monitors salt concentration of filtrate