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Introduction to Habitat and Adaptation

The lower cha...

Question

The lower chambers of heart which pump the blood with maximum pressure are called _________.

A

ventricles

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B

atria

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C

arterioles

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D

venules

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Solution

The correct option is A ventricles
The lower chambers of the heart are called ventricles. They are two: left and right ventricles. These chambers have a large volume and have the thickest muscular walls. This helps in pumping blood throughout the body and the lungs.

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The lower chambers of the heart which pump with the maximum pressure are called ___ .

The upper chambers of the heart which pump blood into the ventricles are called

The upper chambers of heart which pump blood into the ventricles are called ________. Choose the correct option.

Q. (a) What are the upper parts of the heart called?
(b) What are the lower parts of the heart called?
(c) What is the name of blood vessels which connect arteries to veins?
(d) (i) Which side of the heart pumps blood into the lungs?
(ii) Which side of the heart pumps blood into entire body (except the lungs)?

Q. 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.
(a) 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?

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