1
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
What is true about RBCs in humans?
A
They carry about 20-25 percent of CO2.
B
They transport 99.5 percent of O2.
C
They transport about 80 percent oxygen only and the rest 20 percent of it is transported in dissolved state in blood plasma
D
They do not carry CO2 at all.
2
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
If due to some injury the chordae tendinae of the tricuspid valve of the human heart is partially non-functional, what will be the immediate effect?
A
The flow of blood into the aorta will be slowed down
B
The 'pacemaker' will stop working
C
The blood will tend to flow back into the left atrium
D
The flow of blood into the pulmonary artey will be reduced
3
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
Which two of the following changes (i $$-$$ iv) usually tend to occur in the plain dwellers when they move to high altitudes (3, 500 m or more)?
(i)  Increase in red blood cell size
(ii)  Increase in red blood cell production
(iii)  Increased breathing rate
(iv)  Increase in thrombocyte count
Changes occurring are
A
(ii) and (iii)
B
(iii) and (iv)
C
(i) and (iv)
D
(i) and (ii).
4
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
Which one of the following is the correct description of a certain part of a normal human skeleton?
A
Parietal bone and the temporal bone of the skull are jointed fibrous joint.
B
First vertebra is axis which articulates with the occipital condyles.
C
The 9th and 10th pairs of ribs are called the floating ribs .
D
Glenoid cavity is a depression to which the thigh bone articulates.