IV- Renal Physiology Flashcards Preview

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Flashcards in IV- Renal Physiology Deck (243)
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1

Ultrafiltrate of blood

Urine

2

Waste product from proteins

urea

3

Waste product from purines

uric acid

4

Waste product from muscles

creatinine

5

Waste product from RBCs

bilirubin

6

Kidney: Location

T12-L3

7

Kidney: Weight

150g

8

Kidney: Lateral to Medial

capsule, cortex, medulla, renal papilla, renal calyces (minor/major), renal pelvis

9

Kidney: Circulation

renal a. → segmental a. → interlobar a. → arcuate a. → interlobular a. (cortical radiate/radial a.) → afferent arteriole → glomerular capillaries → efferent arteriole → peritubular capillaries/vasa recta → interlobular v. → arcuate v. → interlobar c. → segmental v. → renal v.

10

Glomerular capillaries are highly _____, are responsible for _____ and are the only capillaries that lead to _____.

fenestrated, GFR, arterioles

11

Capillaries that supplies oxygen and glucose to tubular cells

peritubular capillaries

12

Erythropoietin is produced in

interstitial cells

13

Hairpin loop-shaped peritubular capillaries of the juxtamedullary nephrons that participate in _____ exchange.

vasa recta, countercurrent exchange

14

Urinary Bladder: Capacity

600mL

15

Urinary Bladder: Urge to urinate at

150mL - 25%

16

Urinary Bladder: Reflex contraction at

300mL - 50%

17

Urinary Bladder: Main muscle

detrusor

18

Urinary Bladder: Involuntary sphincter

internal sphincter

19

Urinary Bladder: Voluntary sphincter

external sphincter

20

Functional and structural unit of the kidney

nephron

21

There are _____ nephrons per kidney.

750K - 1M nephrons per kidney

22

Nephrons _____ be regenerated.

cannot

23

Kidneys undergo _____ upon 75% damage to kidneys.

compensatory hypertrophy

24

Nephrons: 75%

cortical

25

Nephrons: Renal cortex

cortical

26

Nephrons: Short - only in the cortex

cortical

27

Nephrons: Suppled by peritubular capillaries

cortical

28

Nephrons: 25%

juxtamedullary

29

Nephrons: Cortico-medullary junction

juxtamedullary

30

Nephrons: Long - goes into pyramids

juxtamedullary