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Flashcards in Fluids and Electrolytes Deck (60)
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1

what are the three fluid compartments

intracellular, interstitial, intravascular

2

what is a hypotonic solution

lower solute concentration than another solution

3

where does the fluid shift with a hypotonic solution

fluid shifts from ECF to ICF

4

what is a hypertonic solution

higher concentration than another solution

5

where does the fluid shift with a hypertonic solution

fluid shifts from ICF to ECF

6

4 ways cell maintain homeostasis

diffusion, osmosis, filtration, active transport

7

how does diffusion work

SOLUTES move from higher concentration to lower concentration

8

how does osmosis work

passive movement of a SOLVENT(FLUID) from an area of lower concentration to one of a higher concentration

9

how does capillary filtration occur

blood pushes against capillaries into interstitial fluid by hydrostatic pressure; fluids and solutes forced through capillary wall

10

how does reabsorption work

prevents to much fluid from leaving capillaries regardless of hydrostatic pressure

11

what role does albumin play with reabsorption

albumin stays in capillaries and as albumin increases with fluid shift, fluid will move back into capillaries by osmosis

12

what is the normal plasma colloid osmotic pressure

25 mmhg

13

if hydrostatic pressure is greater than plasma colloid osmotic pressure what happens

water and solute leave capillaries and enter interstitial fluid

14

normally capillary BP is ______ than plasma colloid pressure in arteriole

greater

15

normally capillary BP is ____ than venoule

less

16

how does active transport work

solutes move from lower concentration to higher concentration

17

what does active transport require

energy and the sodium potassium pump

18

what 3 things maintain fluid balance

kidneys, hormones, thirst

19

how do the kidneys maintain fluid balance

nephrons filters blood and forms urine and changes based on fluid balance/needs

20

what is stored and released in the posterior pituitary gland

ADH (vasopressin)

21

how does ADH work

its a water retainer

22

when is ADH released

with increased serum osmolality and decreased blood volume

23

how does the renin-angiotensin aldosterone system work

juxtaglomerular cells release renin - renin releases angiotensin II, angiotensin causes peripheral vasoconstriction and stimulates production of aldosterone - raising blood pressure, and NA/H2O are retained

24

how does active transport work

solutes move from an area of lower concentration to an area of higher concentration - requires energy

25

what does aldosterone regulate

reabsorption of sodium and water

26

what triggers active transport

when blood volume drops, aldosterone signals active transport of sodium to increase BP

27

what counteracts the effects of the renin-angiotensin-aldosterone system

atrial natriuertic peptide

28

what does ANP do

reduces BP and intravascular blood volume, increases urine excretion of na/h2o, and causes vasodilation

29

when is ANP released

when na/h2o are increased

30

what are the major electrolytes of the ecf

sodium and chloride