IC/EC variables

Question 1

Total body fluid

Answer 1

60%

Question 2

Intracellular fluid

Answer 2

2/3 - 40%

Question 3

Ekstracellular fluid

Answer 3

1/3 - 20%

• Interstitial fluid (15%)
• Intravasal fluid (5%)
• Transcellular fluid (ca. 1%)

Question 4

What is transcellular fluid?

Answer 4

Fluids that are outside of the normal compartments: cerebrospinal fluid in CNS, aqueous humor and vitreous humor in the eye, synovial fluid in the joints, glandular secretions, and serous fluid etc.

Question 5

What is interstitial fluid?

Answer 5

Surrounds the cells, but does not circulate

Question 6

What is intravasal fluid?

Answer 6

Blood plasma.

Question 7

What does ICF primarily consist of?

Answer 7

K+ and organic anions, proteins etc.

-The cell membranes and cellular metabolism control the constituents

Question 8

What does ECF primarily consist of?

Answer 8

NaCl and NaHCO3

Question 9

Amount of Na+ in ECF

Answer 9

140 mmol/L

Question 10

Amount of Na+ in ICF

Answer 10

27 mmol/L

Question 11

Amount of K+ in ECF

Answer 11

5 mmol/L

Question 12

Amount of K+ in ICF

Answer 12

95 mmol/L

Question 13

Amount of Ca2+ in ECF

Answer 13

2.5 mmol/L (total)

Question 14

Amount of Ca2+ in ICF

Answer 14

1 mmol/L

Question 15

Amount of Mg2+ in ECF

Answer 15

1 mmol/L

Question 16

Amount of Mg2+ in ICF

Answer 16

3 mmol/L

Question 17

Amount of Cl- in ECF

Answer 17

103 mmol/L

Question 18

Amount of Cl- in ICF

Answer 18

30 mmol/L

Question 19

Amount of HCO3- in ECF

Answer 19

27 mmol/L

Question 20

Amount of HCO3- in ICF

Answer 20

10 mmol/L

Question 21

Amount of H2PO4- /HPO42- in ECF

Answer 21

1.5 mmol/L

Question 22

Amount of H2PO4- /HPO42- in ICF

Answer 22

30 mmol/L

Question 23

Amount of Pr- in ECF

Answer 23

16 mmol/L

Question 24

Amount of Pr- in ICF

Answer 24

60 mmol/L