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5 de oct. de 2022 · The epicardium layer of the heart wall. 1. 2. The epicardium is a serous membrane that consists of an external layer of simple squamous and an inner layer of areolar tissue ( loose connective tissue ). The squamous cells secrete lubricating fluids into the pericardial cavity. The thick middle layer of the heart wall is called the myocardium.
This video covers the anatomy and function of the epicardium, one of the four layers of the heart. Quiz yourself on the heart in situ and its surrounding str...
13 de oct. de 2022 · The epicardium is the visceral part of the serous pericardium, envelopes the heart, contains a variable amount of epicedial fatty tissue adjoining the myocardium at its outer border. Coronary arteries, cardiac veins, lymphatic vessels as well as sympathetic and parasympathetic nerve fibers are embedded into the epicardial fatty tissue, with the ...
Subendothelial layer may have variable thickness; it is most prominent in the left atrium. Elastic layer is the thickest layer of the endocardium and shows prominent elastic fibers admixed with smooth muscle cells. Myocardium (middle layer): Organized in 3 layers / regions: Subepicardial (superficial) Middle.
Epicardium The epicardium (visceral pericardium, black arrows) is a serous membrane (serosa) of variable thickness, forming the outermost tunic of the heart. The connective tissue portion of this layer lies adjacent to the myocardium and is covered by a simple squamous epithelium (mesothelium) that faces the pericardial space.
The epicardium is an essential cell population during cardiac development. It contributes different cell types to the developing heart through epithelial-to-mesenchymal transition (EMT) and it secretes paracrine factors that support cardiac tissue formation. In the adult heart the epicardium is a quiescent layer of cells which can be reactivated upon ischemic injury, initiating an embryonic ...
The pericardium is the thick, membranous, fluid-filled sac that surrounds the heart and the roots of the vessels that enter and leave this vital organ, functioning as a protective membrane. The pericardium is one of the mesothelium tissues of the thoracic cavity, along with the pleura which cover the lungs. The pericardium is composed of two ...
