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
2
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
The figure shows a human blood cell. Identify
it and give its characteristics.
A
Blood cell $$ \to $$ Monocyte, Characteristics $$ \to $$ Life span of 3 days,
produces antibodies
B
Blood cell $$ \to $$ B-lymphocyte, Characteristics $$ \to $$ Forms about 20% of
blood cells involved
in immune response
