Which among the following statement is not true about the heart-The heart is situated between the lungs-The size of the heart is equal to one-s own fist-The heart is made up of involuntary muscles-Heart is covered by a triple walled membranous covering-

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Human Heart

Which among t...

Question

Which among the following statement is not true about the heart?

The heart is situated between the lungs.

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The size of the heart is equal to one's own fist.

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The heart is made up of involuntary muscles.

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Heart is covered by a triple walled membranous covering.

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Solution

The correct option is D Heart is covered by a triple walled membranous covering.
$∙$ Heart is present within the rib cage and in between the two lungs. It is slightly tilted towards the left side.
$∙$ The size of the human heart is equal to one's own fist and weighs about 360 grams.
$∙$ Heart is a muscular organ and is made up of involuntary cardiac muscles, thus its actions cannot be controlled by one's will.
$∙$ Heart is covered by a double walled membranous covering called pericardial membrane.
$∙$ A fluid is present between the two membranes due to which the heart is protected from friction and mechanical shocks.

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