Acid N Bases

Question 0

What is the normal [HCO3-] in blood?

Answer 0

24mM

Question 1

What is the pH of arterial vs venous blood? Why

Answer 1

Arterial= 7.3-7.4
Venous= 7.28-7.38ish

Venous blood is slightly more acidic bc of it carrying CO2

Question 2

What is normal partial pressure of CO2 (PCO2) in blood?

Answer 2

40 mmHg

Question 3

What is normal [ CO2] in blood?

Answer 3

1.2 mM

Question 4

What is the modified HH equation for bicarbonate system?

Answer 4

pH = 6.1 + log ( [HCO3-] mM / 0.03 * PCO2mmHg)

Question 5

Less H2CO3 (carbonic acid) in blood makes it more acidic/ basic.
What physiological phenomenon occurs?

More H2CO3 (carbonic acid) in blood makes it more acidic/ basic.
What physiological phenomenon occurs?

Answer 5

1. Acidic - metabolic acidosis

2. Basic - metabolic alkalosis (pH above 7.4) ( such as hyperventilating in paper bag)

Question 6

More CO2 in blood makes it more acidic/ basic.
What physiological phenomenon occurs?

Less CO2 in blood makes it more acidic/ basic.
What physiological phenomenon occurs?

Answer 6

1. Acid - respiratory acidosis

2. Basic - respiratory alkalosis

Question 7

ICF and ECF composition of 
Na
K
Cl-
A
H2O
Urine
Plasma

Answer 7

ICF              ECF
Na                  14                140
K                    145               5
Cl                    5                  145
A                    126               0
H2O               55000        55000
Max urine.     1200 mosM  
Plasma.         300 mosM