Water And Electrolyte Metabolism

Question 1

Total body water is how many liters

Answer 1

42L

Question 2

How many percent of body weight is water in men and women

Answer 2

Men: 60%
Women: 55%

Question 3

How many liters and percent of water is in the ICF

Answer 3

28L
66%

Question 4

How many liters and percent of water is in the ECF

Answer 4

14L
33%

Question 5

Extra cellular fluid is divided into

Answer 5

Plasma
Interstitial fluid

Question 6

How many liters and percent of water is in the plasma

Answer 6

3.5L
8%

Question 7

Value for ECF osmolality

Answer 7

280-300 mosmol/kg

Question 8

Value for Anion gap

Answer 8

6-20mmol/L

Question 9

Total body sodium in a 70kg man is

Answer 9

3700mmol

Question 10

How much sodium per day is gotten from western diet

Answer 10

100-300 mmol/day

Question 11

Most sodium is excreted in the ________, ________ and ________
Volume: _______

Answer 11

Kidney, sweat, faeces
5mmol/L

Question 12

Cellular uptake of potassium is stimulated by

Answer 12

Insulin

Question 13

Mineralocorticoid that causes hypokalemia

Answer 13

Cabenoxolone

Question 14

Aldosterone antagonists

Answer 14

Spironolactone
Triamterine

Question 15

Reference range of hydrogen

Answer 15

35-45nmol/l

Question 16

Blood buffers include

Answer 16

Bicarbonate, haemoglobin, proteins

Question 17

Urinary buffers include

Answer 17

Phosphate and ammonium buffers

Question 18

What happens in metabolic acidosis

Answer 18

Hydrogen is high or normal but bicarbonate is always low

Question 19

Causes of metabolic acidosis

Answer 19

Renal disease
Diabetic keto acidosis
Lactic acidosis

Question 20

Causes of respiratory acidosis

Answer 20

Respiratory obstruction, respiratory center depression, lung disease, neuromuscular disease like poliomyelitis, extrapulmonary thoracic disease like flail chest