Given below are two statements.
Statement I : The human heart is a mesodermally derived organ situated between the two lungs.
Statement II : The human heart is protected by a double-walled pericardium filled with pleural fluid.
In light of given statements, choose the correct answer from the options given below.

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Both statement I and statement II are correct.

Both statement I and statement II are incorrect.

Statement I is correct, but statement II is incorrect.

Statement I is incorrect, but statement II is correct.

answer is C.

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Detailed Solution

Statement I is correct, but statement II is incorrect.

Statement I: The human heart is indeed a mesodermally derived organ. During embryonic development, the heart originates from the mesoderm layer of the developing embryo. It is situated in the thoracic cavity, between the two lungs, and slightly to the left of the midline.

Statement II: The statement that "the human heart is protected by a double-walled pericardium filled with pleural fluid" is false. While the human heart is indeed protected by a double-walled pericardium, the pericardial cavity is filled with pericardial fluid, not pleural fluid. The pericardial fluid acts as a lubricant, reducing friction as the heart beats within the pericardial cavity. Pleural fluid, on the other hand, fills the pleural cavity surrounding the lungs, not the pericardial cavity surrounding the heart.

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