1
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.
2
AIPMT 2011 Prelims
MCQ (Single Correct Answer)
+4
-1
The figure given below shows a small part of human lung where exchange of gases takes place. Select the option which represents labelled part (A, B, C or D) correctly identified along with its function. AIPMT 2011 Prelims Biology - Breathing and Exchange of Gases Question 21 English
A
D : capillary wall - exchange of O2 and CO2 takes place here
B
B : red blood cells - transport of CO2 mainly.
C
A : alveolar cavity - main site of exchange of respiratory gases
D
C : arterial capillary - passes oxygen to tissues
3
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.
4
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
Listed below are four respiratory capacities (i $$-$$ iv) and four jumbled respiratory volumes of a normal human adult.

Respiratory
capacities
Respiratory
volumes
(i) Residual volume 2500 mL
(ii) Vital capacity 3500 mL
(iii) Inspiratory reserve
volume
1200 mL
(iv) Inspiratory capacity 4500 mL

Which one of the following is the correct matching of two capacities and volumes?
A
(ii) 2500 mL,   (iii) 4500 mL
B
(iii) 1200 mL,   (iv) 2500 mL
C
(iv) 3500 mL,   (i) 1200 mL
D
(i) 4500 mL,   (ii) 3500 mL
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