Heart conditions are among the most common types of disorders affecting people. In the United States, heart disease is the leading cause of death for people of all genders and most ethnic and racial groups. Common conditions that affect your heart include: Atrial fibrillation (Afib): Irregular electrical impulses in your atrium. The heart has four chambers: the left and right atriums and the left and right ventricles. They form a shallow groove at the line of their junction, which form the atrioventricular groove. The atrioventricular groove hosts major coronary arteries while they travel along to the line of attachment of atrioventricular valves.
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Heart Wall The heart wall consists of three layers: Epicardium: The outer layer of the wall of the heart. Myocardium: The muscular middle layer of the wall of the heart. Endocardium: The inner layer of the heart. Cardiac Conduction Cardiac conduction is the rate at which the heart conducts electrical impulses. The heart holds a special position in anatomical sciences. For instance, you can live without your spleen or with only one kidney, you can even regrow your liver-but you cannot live without a heart. This page will introduce you to the anatomy of the heart. Contents Heart anatomy Heart valves Blood flow through the heart Coronary circulation The heart is an organ that weighs approximately 350 grams (less than one pound). It's nearly the size of an adult's clenched fist. It's located in the thorax (chest)—between the lungs —and extends downward between the second and fifth intercostal (between the ribs). The human heart is located within the thoracic cavity, medially between the lungs in the space known as the mediastinum. Figure 19.2 shows the position of the heart within the thoracic cavity.
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Heart Anatomy of the heart: anatomical illustrations and structures, 3D model and photographs of dissection Antoine MICHEAU, MD , Denis HOA, MD Authors affiliations Publication date: Aug 8, 2008 | Last update: Oct 3, 2022 https://doi.org/10.37019/e-anatomy/180 ISSN 2534-5079 The anatomical base points dorsally and slightly upwards to the right. The right atrium and ventricle make up most of the sternocostal surface of the heart, while the diaphragmatic surface is made up by the right and left ventricles. The left atrium contributes to the anatomical base. Endocardium. 1/3. PLACING THE HEART IN THE CHEST. One of the first rules of human anatomy is that all bodily parts should be described as viewed in the so‐called anatomical position (Anderson and Loukas, 2009).This means that the heart should be described as it is normally positioned within the thorax (Fig. (Fig.1; 1; Cosío et al., 1999; Anderson et al., 2013).It is difficult in the dissecting room, however. By: Tim Taylor Last Updated: Jul 30, 2020 2D Interactive NEW 3D Rotate and Zoom Anatomy Explorer Heart Aortic Valve Bundle Branches Chordae Tendineae Interventricular Septum Left Atrium Left Auricle Left Ventricle Mitral Valve Papillary Muscles Pulmonary Valve Purkinje Fibers Right Atrium Right Auricle Right Ventricle Tricuspid Valve
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Heart Anatomy Your heart is located between your lungs in the middle of your chest, behind and slightly to the left of your breastbone (sternum). A double-layered membrane called the pericardium surrounds your heart like a sac. A human heart viewed from the so-called anterior position, demonstrating the valentine heart orientation used by many to incorrectly describe anatomy. The red line surrounding the heart is the characteristic symbol, which was theoretically derived from observing the heart in this orientation.
Knowing the anatomical structure of the heart is essential for understanding its function, performing clinical examination, and interpreting radiological findings. The heart consists of 4 chambers: 2 atria (ie, the right atrium and the left atrium) and 2 ventricles (ie, the right ventricle and the left ventricle). Anatomy Video Lectures. From a channel with a health professional licensed in Germany.
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There are two major reasons for this: (1) many descriptions of heart anatomy have been made with the heart removed from the body and incorrectly positioned during examination, and (2) a heart-centric orientation has been preferred to describe the structures. Many physicians and medical students can envision an anatomically correct heart, in addition to the anatomical conformation of congenital heart defects.
