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1
AIPMT 2012 Prelims
MCQ (Single Correct Answer)
+4
-1
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Which one of the following is the correct statement for respiration in humans?
A
Cigarette smoking may lead to inflammation of bronchi.
B
Neural signals from pneumotoxic centre in pons region of brain can increase the duration of inspiration.
C
Workers in grinding and stone-breaking industries may suffer, from lung fibrosis.
D
About 90% of carbon dioxide (CO2) is carried by haemoglobin as carbamino-haemoglobin.
2
AIPMT 2011 Mains
MCQ (Single Correct Answer)
+4
-1
Which one of the following is a possibility for most of us in regard to breathing, by making a conscious effort?
A
One can breathe out air totally without oxygen.
B
One can breathe out air through Eustachian tube by closing both nose and mouth.
C
One can consciously breathe in and breathe out by moving the diaphragm alone, without moving the ribs at all.
D
The lungs can be made fully empty by forcefully breathing out all air from them.
3
AIPMT 2011 Mains
MCQ (Single Correct Answer)
+4
-1
Bulk of carbon dioxide (CO2) released from body tissues into the blood is present as
A
bicarbonate in blood plasma and RBCs
B
free CO2 in blood plasma
C
70% carbamino-haemoglobin and 30% as bicarbonate
D
carbamino-haemoglobin in RBCs.
4
AIPMT 2011 Prelims
MCQ (Single Correct Answer)
+4
-1
A large proportion of oxygen remains unused in the human blood even after its uptake by the body tissues. This O2
A
acts as a reserve during muscular exercise
B
raises the pCO2 of blood to 75 mm of Hg.
C
is enough to keep oxyhaemoglobin saturation at 96%
D
helps in releasing more O2 to the epithelial tissues.
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