Stella Marsden
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Jun 28, 2024 · The heart is subdivided into chambers by septa into right and left halves, and a constriction subdivides each half of the organ into two cavities, the upper cavity being called the atrium and the lower the ventricle. The heart, therefore, consists of four chambers: right atrium. left atrium. right ventricle. left ventricle.
2 days ago · The heart consists of several layers of a tough muscular wall, the myocardium. A thin layer of tissue, the pericardium, covers the outside, and another layer, the endocardium, lines the inside. The heart cavity is divided down the middle into a right and a left heart, which in turn are subdivided into two chambers.
Jun 11, 2024 · Remembering Each Part. The heart is a vital, fist-sized muscular organ located slightly on the left side of the chest. It consists of four main chambers: two atria and two ventricles. Understanding its basic anatomy is crucial to understanding how it functions.
3 days ago · The heart is the first functional organ to develop and starts to beat and pump blood at about three weeks into embryogenesis. This early start is crucial for subsequent embryonic and prenatal development. The heart derives from splanchnopleuric mesenchyme in the neural plate which forms the cardiogenic region.
4 days ago · The base of the heart is located along the body's midline with the apex pointing toward the left side. Because the heart points to the left, about 2/3 of the heart's mass is found on the left side of the body and the other 1/3 is on the right.
Jun 10, 2024 · The development of the heart begins with the formation of the primitive heart tube following embryonic folding. In this article we shall consider the embryonic development of the heart as well as some important clinical conditions associated with failure of this process.
Jun 24, 2024 · The wall of the heart consists of three distinct layers—the epicardium (outer layer), the myocardium (middle layer), and the endocardium (inner layer). Coronary vessels supplying arterial blood to the heart penetrate the epicardium before entering the myocardium.
