PERICARDIAL SAC Meaning and
Definition
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The pericardial sac is a protective and anatomical structure located in the chest cavity of vertebrates, including humans, specifically around the heart. It is a double-layered, fluid-filled sac made up of two distinct layers known as the parietal pericardium and the visceral pericardium, also referred to as the epicardium.
The parietal pericardium forms the outer layer of the pericardial sac, closely lining the inner surface of the chest wall. It is made up of thick fibrous tissue that provides structural support and protection to the heart. This layer also helps prevent the heart from overexpanding or moving excessively within the chest cavity during physical activity.
The visceral pericardium, on the other hand, is the inner layer of the pericardial sac that directly covers the surface of the heart, forming a protective barrier around it. It is a thin, serous membrane that produces a lubricating fluid called pericardial fluid. This fluid acts as a lubricant, reducing friction between the layers of the pericardium when the heart beats and allowing it to move smoothly within the pericardial sac.
Overall, the pericardial sac serves crucial functions in protecting the heart from external trauma, providing shock absorption, allowing for free movement of the heart, and maintaining a stable environment for optimal cardiac function.
Common Misspellings for PERICARDIAL SAC
- oericardial sac
- lericardial sac
- -ericardial sac
- 0ericardial sac
- pwricardial sac
- psricardial sac
- pdricardial sac
- prricardial sac
- p4ricardial sac
- p3ricardial sac
- peeicardial sac
- pedicardial sac
- peficardial sac
- peticardial sac
- pe5icardial sac
- pe4icardial sac
- perucardial sac
- perjcardial sac
- perkcardial sac
Etymology of PERICARDIAL SAC
The word "pericardial" is derived from the Greek words "peri-" meaning "around" and "kardia" meaning "heart". The term refers to the membrane that surrounds and protects the heart. "Sac" comes from the Latin word "saccus" meaning "bag" or "sack". Therefore, the term "pericardial sac" describes the protective bag-like membranous structure that encloses the heart.
Similar spelling words for PERICARDIAL SAC
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