Question

Mammalian heart is enclosed by

• A. Perichondrium
• B. Periosteum
• C. No membrane
• D. Pericardium

Answer 1

The correct option is D

Pericardium

The pericardium (from the Greek περί, "around" and κάρδιον, "heart") is a double-walled sac containing the heart and the roots of the great vessels. The pericardial sac has two layers, a serous layer and a fibrous layer. It encloses the pericardial cavity which contains pericardial fluid.