Question

The heart is covered by
A. Epicardium
B. Pericardium
C. Supracardium
D. Endocardium

Answer 1

The heart is a muscular organ and it is located in the thoracic cavity between the lungs. It is derived from the mesoderm. It has the size of a clenched fist. The human circulatory system is also known as the blood vascular system.

Complete answer:
The heart is covered by pericardium. It is the double walled membranous bag. The pericardium is made up of two layers: an outer parietal pericardium and an inner visceral pericardium attached to the heart. There is a space between the two layers known as pericardial cavity and this cavity is filled with a fluid called pericardial fluid. The pericardial fluid minimizes the friction generated by the heart when it contracts. The pericardium protects the heart from shocks and mechanical injuries. The pericardium serves as a physical barrier between the heart and adjacent organs to protect it from the infection. It protects the heart from overfilling of the blood.
Epicardium is the innermost layer of the pericardium. It is attached to the muscles of the walls of the heart.
The Endocardium is the innermost layer of tissue which lines the chamber of the heart. The Endocardium provides protection to the valves and heart chambers. The Endocardium is made up of endothelial cells.

So the correct answer is option B.

Note: The heart is made up of cardiac muscles. Cardiac muscles are an involuntary striated muscle tissue found only in the heart. These are made for increasing and decreasing the rate of muscular activity. They are involuntary muscles as they generate their own impulse or excitation.