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Encyclopedia > Serous pericardium

The pericardium is a double-walled sac that contains the heart and the roots of the great vessels. There are three layers to this sac: the fibrous pericardium, serous pericardium, and the pericardial cavity. The heart and lungs (from an older edition of Grays Anatomy) The heart (Latin cor) is a hollow, muscular organ that pumps blood through the blood vessels by repeated, rhythmic contractions. ...

The fibrous pericardium is the most superficial layer. It is a dense connective tissue layer which functions in protecting the heart, anchoring it to the surrounding walls and preventing it from overfilling with blood. Connective tissue is any type of biological tissue with an extensive extracellular matrix and often serves to support, bind together, and protect organs. ... Red blood cells (erythrocytes) are present in the blood and help carry oxygen to the rest of the cells in the body Blood is a circulating tissue composed of fluid plasma and cells (red blood cells, white blood cells, platelets). ...

The serous pericardium is deep to the fibrous pericardium. It contains two layers, both of which function in lubricating the heart to prevent friction from occurring during heart activity. The layer next to the fibrous pericardium is the parietal layer, and the layer next to the heart is the visceral layer, also known as the epicardium. Between these two layers exists a small cavity called the pericardial cavity, which contains a supply of serous fluid. Epicardium describes the outer layer of heart tissue (from Greek; epi- outer, cardium heart). ...

Pericarditis is inflammation of the pericardium. It can cause fluid to build up in the sac. Excessive amounts of fluid may lead to cardiac tamponade by physically blocking the heart from beating properly or compression of the great vessels of the heart. Pericarditis is inflammation of the pericardium. ... Inflammation is the first response of the immune system to infection or irritation and may be referred to as the innate cascade. ... Cardiac tamponade is a medical emergency condition where a large amount of a liquid accumulates in the pericardium in a relatively short time. ...

Traditional Chinese theory

See Pericardium (Zang) for a description of the pericardium according to the Zang Fu theory of Traditional Chinese Medicine. As distinct from the Western medical concept of Pericardium, this concept from Traditional Chinese Medicine is more a way of describing a set of interrelated parts than an anatomical organ. ... Zang-Fu theory is a concept within traditional Chinese medicine, part of the TCM model of the body. ... Traditional Chinese medicine (TCM) also known simply as Chinese medicine (Chinese: 中醫學, zhōngyī xué, or 中药学, zhōngyaò xué) is the name commonly given to a range of traditional medical practices used in China that have developed over the course of several thousand years of history. ...

Cardiovascular system - Heart

Pericardium - Epicardium - Myocardium - Endocardium - Cardiac pacemaker - Sinoatrial node - Atrioventricular node - Bundle of His - Purkinje fibers - Heart valves The circulatory system or cardiovascular system is the organ system which circulates blood around the body of most animals. ... The heart and lungs (from an older edition of Grays Anatomy) The heart (Latin cor) is a hollow, muscular organ that pumps blood through the blood vessels by repeated, rhythmic contractions. ... Epicardium describes the outer layer of heart tissue (from Greek; epi- outer, cardium heart). ... Myocardium is the muscular tissue of the heart. ... In the heart, the endocardium is the innermost layer of cells, embryologically and biologically similar to the endothelium that lines blood vessels. ... The contractions of the heart are controlled by electrical impulses, these fire at a rate which controls the beat of the heart. ... The sinoatrial node (abbreviated SA node, also called the sinus node) is the impulse generating (pacemaker) tissue located in the right atrium of the heart. ... The atrioventricular node (abbreviated AV node) is the tissue between the atria and the ventricles of the heart, which conducts the normal electrical impulse from the atria to the ventricles. ... The bundle of His is a bundle of heart tissues that transmits the electrical impulses from the AV node to the ventricles, causing cardiac muscles in the ventricles to contract. ... Purkinje fibers (or Purkyne tissue) are located in the inner ventricular walls of the heart, just beneath the endocardium. ... In anatomy, the heart valves are valves in the heart that prevent blood from flowing the wrong way. ...

  Results from FactBites:
V. Angiology. 4a. The Pericardium. Gray, Henry. 1918. Anatomy of the Human Body. (627 words)
The fibrous pericardium forms a flask-shaped bag, the neck of which is closed by its fusion with the external coats of the great vessels, while its base is attached to the central tendon and to the muscular fibers of the left side of the diaphragm.
The serous pericardium is, as already stated, a closed sac which lines the fibrous pericardium and is invaginated by the heart; it therefore consists of a visceral and a parietal portion.
The arteries of the pericardium are derived from the internal mammary and its musculophrenic branch, and from the descending thoracic aorta.
Dorlands Medical Dictionary (3154 words)
(per”ĭ-kahr”de-o-sən-te´sis) [pericardium + -centesis] surgical puncture of the pericardial cavity for the aspiration of fluid.
(per”ĭ-kahr”de-ot´ə-me) [pericardium + -tomy] surgical incision of the pericardium.
the inner serous portion of the pericardium consisting of two layers, the lamina parietalis pericardii serosi, which is apposed to the fibrous pericardium, and the lamina visceralis pericardii serosi, or epicardium, which is reflected onto the roots of the great vessels and the heart.
  More results at FactBites »



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