Question

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

• A. The heart is situated between the lungs.
• B. The size of the heart is equal to one's own fist.
• C. The heart is made up of involuntary muscles.
• D. Heart is covered by a triple walled membranous covering.

Answer 1

The correct option is D Heart is covered by a triple walled membranous covering.

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