First slide

Circulatory Pathways

Question

The human heart is protected by

Easy

A

single layered pleura
B

double layered pleura
C

single layered pericardium
D

double layered pericardium

Solution

The heart is protected by a double-walled membranous sac called pericardium, enclosing the pericardial fluid. The pericardial fluid reduces friction between the layers of the serous pericardium as the heart moves.

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