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Normally each 100 ml of venous blood contains…….ml of oxygen.
a) 20   
b) 19.4
c) 14.4
d) 5

c

Explanation: 75% saturation at 40 mm Hg PO2



How much oxygen is released from arterial blood to tissue?
a) 20   
b) 19.4
c) 14.4
d) 5

c

Explanation: arterial blood oxygen 19.4ml – venous blood oxygen 14.4 ml= 5 ml



During exercise, the need of oxygen is greatly increased in the tissue. How much oxygen is present in venous blood leaving active tissue?
a) 20   
b) 19.4
c) 4.4  
d) 5

c

Explanation: 20% saturation at 18mm Hg PO2



Why less oxygen is in dissolved state in plasma as compare to CO2?
a) O2 is less soluble than CO2 in plasma
b) O2 is more soluble in plasma than CO2
c) partial pressure of oxygen is very high
d) partial pressure of oxygen is very low

a

How much oxygen is transported in dissolved form in each 100 ml of blood?
a) 20   
b) 19.4
c) 14.4
d) 0.17

d

Transport of Carbon Dioxide


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