Breathing and Exchange of Gases Question 22
22. Figure shown schematic plan of blood circulation in humans with labels A to D. Identify the label and give its function’s.
[NEET 2013]
(a) B-Pulmonary artery-takes blood from heart to lungs, $PO_2=90 mm Hg$
(b) C-Vena Cava - takes blood from body parts to right auricle, $PCO_2=45 mm Hg$
(c) D - Dorsal aorta - takes blood from Heart to body Part $PO_2=95 mm Hg$
(d) A-Pulmonary vein - takes impure blood from body parts, $PO_2=60 mm Hg$
Show Answer
Answer : b
Hints & Solution
(b) 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.
