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The heart is covered by a membranous bag of how many walls?

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in Biology – Class 11 by (272k points)
The heart is covered by a membranous bag of how many walls?

(a) One

(b) Two

(c) Three

(d) It is not covered by a membranous bag

The question was posed to me by my school teacher while I was bunking the class.

This key question is from Double Circulation in division Body Fluids and Circulation of Biology – Class 11

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Best answer
The correct answer is (b) Two

Best explanation: Heart is protected by a double-walled membranous bag, pericardium, enclosing the pericardial fluid which acts as a shock absorber. Our heart consists of four chambers.

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