The heart is covered by a membrane called

Question

Question

This question was previously asked in

RRB Pharmacist Previous Year Paper 2015

Answer 1

Correct Answer: Pericardium

Rationale:

The pericardium is a double-layered membrane that surrounds and protects the heart. It consists of an outer fibrous layer and an inner serous layer, which is further divided into the parietal and visceral pericardium (epicardium).
The main functions of the pericardium include anchoring the heart within the chest cavity, preventing over-expansion of the heart, and reducing friction between the heart and surrounding structures during heartbeats.

Explanation of Other Options:

Epidermis

Rationale: The epidermis is the outermost layer of the skin. It acts as a barrier to protect the body from environmental factors such as pathogens, UV radiation, and dehydration. It is not related to the heart or its covering.

Dermis

Rationale: The dermis is the layer of skin beneath the epidermis. It contains connective tissue, blood vessels, nerve endings, hair follicles, and glands. Like the epidermis, it has no direct connection to the heart or its covering.

Epicardium

Rationale: The epicardium is the visceral layer of the serous pericardium. It is the innermost layer of the pericardium that directly covers the heart muscle. While it is part of the pericardium, it is not the entire membrane covering the heart.

Conclusion:

Among the given options, the pericardium is the correct term for the membrane that covers the heart. It plays a crucial role in protecting and supporting the heart within the thoracic cavity.