Q.
Figure shown schematic plan of blood circulation in
humans with labels A to D. Identify the label and give its
function’s.
815
163
Breathing and Exchange of Gases
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Solution:
A is pulmonary vein which takes pure blood from
lungs to heart. B is dorsal aorta which takes pure blood
from heart to various body parts. C is vena cava which
takes impure blood from various body pars to right auricle
of the heart. D is pulmonary artery which takes impure
blood from heart to lungs.