Double layered membrane of heart

The double layered membrane of heart is called as _________

(A) Pericardium                                                 (B) Monocardium

(C) Epicardium                                                   (D) None

EXPLANATION

  • The heart is surrounded by a double-layered membrane called the pericardium.

  • It has two main layers:

    1. Outer fibrous pericardium – tough, protective outer layer

    2. Inner serous pericardium, which is itself divided into:

      • Parietal layer (lines the fibrous pericardium)

      • Visceral layer (also called epicardium – it lies directly on the heart surface)

  • Between these layers is the pericardial cavity, filled with fluid to reduce friction during heartbeats.

❗ Clarification on other options:

  • (B) Monocardium – ❌ Not a valid anatomical term.

  • (C) Epicardium – ❌ This is just the inner layer of the pericardium, not the full double-layered structure.

  • (D) None – ❌ Incorrect because (A) is correct.

✅ Final Answer: (A) Pericardium

Double layered membrane of heart