The figure shows blood circulation in humans with
labels A to D. Select the option which gives correct
identification of label and functions of the part.
A
A - Artery-Thick walled and blood flows
evenly
B
C - Vein-Thin walled and blood flows in
jerks/spurts
C
D - Pulmonary vein-Takes oxygenated
blood to heart, pO2
= 95 mmHg
D
B - Capillary-Thin without muscle layer and
wall two cell layers thick
3
NEET 2013
MCQ (Single Correct Answer)
+4
-1
The given figure shows schematic plan of blood
circulation in humans with labels A to D.
Identify the label and give its functions?
A
A - Pulmonary vein - takes impure blood
from body parts, pO2
= 60 mm Hg
B
B - Pulmonary artery - takes blood from
heart to lungs, pO2
= 90 mm Hg
C
C - Vena cava - takes blood from body parts
to right auricle, pCO2
= 45 mm Hg
D
D - Dorsal aorta - takes blood from heart to
body parts, pO2
= 95 mm Hg
4
NEET 2013
MCQ (Single Correct Answer)
+4
-1
The diagram given here is the standard ECG of a normal person. The P-wave represents the
