The human heart is enclosed in the A)Pericardium B)Pleura C)Duramater D)Conjunctive
Option A)The pericardium is a double-walled sac containing the heart and the roots of the great vessels. It is a tough double layered membrane which covers the heart. The space between the two layers of it is filled with a pericardium fluid which protects the heart from any kind of external jerk or shock.
