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The human body has an organ A which acts as a double pump. The oxygenated blood coming from the lungs through a blood vessel B enters the upper left chamber C of the double pump. When chamber C contracts, then blood goes into lower left chamber D. The contraction of chamber D forces the blood to go into a blood vessel E which supplies oxygenated blood to all the organs of the body (except the lungs). The deoxygenated blood coming out of the body organs is taken by a blood vessel F to the right upper chamber G of pumping organ. Contraction of chamber G forces the deoxygenated blood into right lower chamber H. And finally the contraction of chamber H sends the deoxygenated blood into lungs through a blood vessel I.What is organ A ?(b) Name the blood vessel (i) B (ii) E (iii) F, and (iv) I.(c) What are chambers (i) C, and (ii) D ?(d) What are chambers (i) G, and (ii) H ?
(a) Organ A is Heart.
Explanation: The heart is an organ that acts as a double pump.
(b) (i) Blood vessel B is the Pulmonary vein.
Explanation: The oxygenated blood coming from the lungs through the Pulmonary vein enters the upper left chamber C (Left Atrium) of the double pump.
(ii) Blood vessel E is the Aorta.
Explanation: The contraction of chamber D (Left ventricle) forces the blood to go into the Aorta which supplies oxygenated blood to all the organs of the body (except the lungs).
(iii) Blood vessel F is the Vena cava.
Explanation: The deoxygenated blood coming out of the body organs is taken by the Vena Cava to the right upper chamber G (Right atrium) of the pumping organ.
(iv) Blood vessel I is the Pulmonary artery.
Explanation: The contraction of chamber H (Right ventricle) sends the deoxygenated blood into the lungs through the Pulmonary artery.
(c) (i) Chamber C is the left atrium.
(ii) Chamber D is the left ventricle.
(d) (i) Chamber G is the right atrium.
(ii) Chamber H is the right ventricle.
(Refer image for better understanding)
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