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pericardium

The fibroserous sac enclosing the heart and the roots of the great vessels, composed of external (fibrous) and internal (serous) layers. See also pericardial.

  • adherent p. — one abnormally connected with the heart by dense fibrous tissue.
  • congenitally absent p. — the heart lies free in the pleural sac; recorded in dogs.
  • fibrous p. — the external layer of the pericardium, consisting of dense fibrous tissue.
  • parietal p. — the parietal layer of the serous pericardium, which is in contact with the fibrous pericardium.
  • serous p. — the inner, serous portion of pericardium, consisting of two layers, visceral and parietal; the space between the layers is the pericardial cavity.
  • visceral p. — the inner layer of the serous pericardium, which is intimately attached to the heart and roots of the great vessels. Called also epicardium.


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