Set 21 Renal and Respiratory Phys Flashcards Preview

NBCE Part 1 > Set 21 Renal and Respiratory Phys > Flashcards

Flashcards in Set 21 Renal and Respiratory Phys Deck (48):
1

What is the order of blood flow in the kidney?

renal artery, interlobar, arcuate, interlobar, afferent arteriole, glomerulus, efferent arteriole, peritubular caps, venules, interlobar vein, arcuate vein, interlobar vein, renal vein, IVC

2

Where does urine flow in the kidney?

collecting duct, calyx, renal pelvis, ureter, bladder, and urethra

3

What is the nephron?

function unit of the kidney

4

How much does the kidney filtrate per day?

180L

5

What is the function of Bowman's Capsule?

filtration

6

What is the function of the proximal tubule?

reabsorption

7

What are podocytes?

cells forming filtration membrane

8

What is the function of the Loop of Henle?

counter current concentration

9

What are the vasa recta?

thin walled vessels, parallel loops of henle

10

What happens in the distal tubule?

aldosterone reabsorbs Na+ and secretes K+

11

Excreted =

filtered - reabsorbed + secreted

12

How much filtrate is reabsorbed by the end of the proximal tubule?

65%

13

How much filtrate is reabsorbed by the end of the distal tubule?

99%

14

What is the normal glomerular filtration rate?

120-125 ml/min

15

What is normal glomerular filtration rate determined by?

hydrostatic pressure

16

What are juxtaglomerular cells?

mechanoreceptors for BP

17

What is the macula densa?

chemoreceptors by the juxtaglomerular cells

18

Where does aldosterone come from?

zona glomerulosa as a result of the renin-angiotensin system

19

What is erythroprotein?

made in the kidney, stimulates RBC production

20

Where is renin made?

juxtaglomerular cells

21

Where does Angiotensin I work?

in the blood

22

What is A.C.E.?

angiotensin converting enzyme

23

Where is A.C.E. made?

the lungs

24

What is the function of angiotensin II?

constricts blood vessels (^ BP) and stimulates the release of aldosterone (long term ^BP by ^ Na+ reabsorption)

25

What is respiratory acidosis?

^pCO2 and \/ pH

26

What is respiratory alkalosis?

\/pCO2 and ^pH

27

What is v

\/ HCO3- and \/pH

28

What is metabolic alkalosis?

^ HCO3- and \/pH

29

What is a common cause of respiratory acidosis?

hypoventilation

30

What is a common cause of respiratory alkalosis?

hyperventilation

31

What is a common cause of metabolic acidosis?

diarrhea, ketosis, and renal dysfx

32

What is a common cause of metabolic alkalosis?

drugs, vomiting, and diuretics

33

Where is the best ventilation perfusion ratio in the lungs?

hilum

34

What part of the lungs has very little ventilation?

the apex

35

IRV:

3100ml

36

TV:

500 ml

37

ERV:

1200ml

38

RV:

1200ml

39

IC:

3600ml

40

FRC:

2400ml

41

VC:

4800ml

42

TLC:

5-6 liters

43

Where is surfactant made?

type II alveolar cells

44

What happens when surfactant is missing?

hyaline membrane disease

45

what is the function of lipoprotein?

keep lungs expanded, decrease surface tension

46

What is the function of the pneumotaxic center?

turns of inspiratory center before overexpansion of the lungs

47

What is the Herring-Breuer reflex?

stretch receptors prevent over stretch of lungs

48

What is the function of the Apneustic center?

prevents turn off of inspiratory center