What is the name of the thin, fibrous sac that encases the heart?
Understand the Problem
The question is asking for the specific anatomical term for the thin, fibrous sac surrounding the heart.
Answer
Pericardium
The thin, fibrous sac that encases the heart is called the pericardium.
Answer for screen readers
The thin, fibrous sac that encases the heart is called the pericardium.
More Information
The pericardium is a double-layered structure containing the heart and the roots of the great vessels. It has a protective and lubricating function, helping to prevent friction between the heart and surrounding tissues during heartbeats.
Tips
A common mistake is confusing the pericardium with the epicardium, which is the visceral layer of the serous pericardium attached to the heart muscle.
Sources
- Pericardium: Function and Anatomy - Cleveland Clinic - my.clevelandclinic.org
- Pericardium - Wikipedia - en.wikipedia.org
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