Fluid and Electrolytes Flashcards Preview

Test 2 > Fluid and Electrolytes > Flashcards

Flashcards in Fluid and Electrolytes Deck (34):
1

Intracellular

All fluid inside the cells

2

Extracellular

All fluid outside the cells
Three categories:
Intravascular
Interstitial
Transcellular

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Intravascular

Inside the vessels

4

Interstitial

Lymph and between the cells

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Transcellular

In specialized compartments:CSF synovial joints, GI tract, pleural, ocular, peritoneal, pericardial

6

Homeostasis

State of equilibrium

7

Body water content

50-60% of adult body weight
Approximate 42 liters in an average person

8

Fluid lost through

Respiration
Urination
Feces/ GI tract
Perspiration
Diarrhea/ vomiting

9

Diffusion

Movement of molecules from an area of high concentration to one of low concentration
Passive transport

10

Facilitated diffusion

Passive process by which diffusion of a molecuke is increased by its association with another molecule and moves against the concentration gradient
No energy involved

11

Osmosis

Movement of water between two compartments from an area of low solute concentration to an area of high concentration

12

Osmotic movement

Hypotonic
Hypertonic
Isotonic

13

Hypotonic

Less solute concentration than the interior of the cell

14

Hypertonic

Greater solute concentration than the interior of the cell

15

Isotonic

Equal solute concentration to the interior of the cell

16

Osmotic pressure

Amount of pressure required to stop osmotic movement of water

17

Active transport

Process in which molecules move against concentratiin gradient
ie:sodium potassium pump

18

Hydrostatic pressure

Force within a fluid compartment
-Major force that pushes water out of the vascular system at the capillary level

19

Oncotic pressure

Pressure exerted by colloids in a solution

20

Filtration

Passive diffusion of molecules into and out of the vascular system

21

First space

Normal distribution

22

Second space

Abnormal accumulation of interstitial fluid

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Third space

Abnormal accumulation in a portion of the body from which it is not easily exchanged

24

Hypothalamus

Stimulate thirst
Stimulate release of ADH
Increases free water

25

Pituitary

Produces, stores, and releases ADH after receipt of message from hypothalamus

26

Adrenal cortical

Releases hormones to regulate water and electrolytes
Glucocorticoids
-Cortisol
Mineralcorticoids
-Aldosterone

27

Hypovolemia

ECF deficit
Abnormal loss of normal body fluids
Tx- replace water and electrolytes

28

Hypervolemia

Fluid volume excess
Retention and shift of fluids
Tx-remove fluid without changing electrolyte composition of osmolality of ECF

29

Dehydration

Loss of water with no alteration in electrolytes

30

Electrolytes

Substances whose molecules dissociate into ions when placed in water

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Cations

Positively charged ions

32

Anions

Negatively charged ions

33

ICF electrolytes

Cation K+
Anion Phosphate

34

ECF electrolytes

Cation Na+
Anion Cl-