Q5 of 95 Page 94

Give reason for the following:

The walls of the left ventricle are thicker than the walls of all other chambers.

The walls of left ventricle are thicker than the walls of all other chambers because the left ventricle pumps blood to the farthest points in the body like up to the toes in the feet or up to the brain against gravity.


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How do you account for the following differences?

(a) The left ventricle has thicker walls than the right ventricle.


(b) The walls of the right ventricle are thicker than those of the right auricle.

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Blood flowing away from the stomach and intestines is put into circulation via the liver and not directly.

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Give reason for the following:

The blood groups of both the donor and recipient must be known before transfusing blood.