Ch. 15

Question 1

Extracellular fluid osmolality range

Answer 1

280-300 mOsm/kg water

Question 2

Omsolality vs Osmolarityh

Answer 2

osmolality - osmol/kg water
osmolarity - osmol/L

Question 3

Colloid osmotic pressure

Answer 3

Osmotic pressure relating to proteins and large molecules that can’t freely travel across membrane

Question 4

Hydrostatic Pressure and Oncotic pressure in arteries/capillaries

Answer 4

Hydrostatic pressure higher than oncotic pressure, allowing fluid movement into tissues

Question 5

Hydrostatic Pressure and Oncotic pressure in veins

Answer 5

Hydrostatic pressure lower than oncotic pressure, moving excess fluids

Question 6

High urine osmolality
High plasma osmolality

Answer 6

Kidney trying to retain water but there isn’t enough; net deficiency of water

Question 7

Low urine osmolality
Low plasma osmolality

Answer 7

Kidney trying to excrete water but there is too much; net excess of water

Question 8

Sodium normal values

Answer 8

135-145 mEq/L or mmol/L

Question 9

Potassium normal values

Answer 9

3.5-5.0 mEq/L or mMol/L

Question 10

Chloride normal values

Answer 10

100-110 mEq/L or mMol/L

Question 11

Total CO2 (tCO2) normal values

Answer 11

21-31 mEq/L

Question 12

anion gap normal value

Answer 12

10-20 (including K)
7-16 (excluding K)