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Left Atrium: The upper left chamber of the heart. During the normal cardiac cycle, the left atrium receives oxygenated blood from the lungs through the pulmonary veins. Once both atria are full, they contract, and the oxygenated blood from the left atrium flows into the left ventricle through the open mitral valve.
The left atrium (LA) and left ventricle (LV) are separated from the right atria (RA) and right ventricle (RV) by a band of tissue called the septum. The RA receives deoxygenated blood from the head and neck and from the rest of the body via the superior and inferior vena cava, respectively.
Where is the Heart Located? •In the thorax (this is about between your neck and your belly button) •Behind the rib cage and lungs •It’s slightly to the left of the center of your body •Your heart is about the size of your fist
17 sie 2023 · 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.
Viewed from the front, the sternocostal surface of the heart (Fig. 1.1) mainly consists of the anterior walls of the right atrium, right ventricles and the left ventricle. A small part of the left atrium and left ventricle forms the left border and the apex is formed by the left ventricle.
2 dni temu · From the pulmonary veins, blood enters the heart again in the left atrium. The left atrium contracts to pump blood through the bicuspid (mitral) valve into the left ventricle. The left ventricle pumps blood through the aortic semilunar valve into the aorta.
The left heart takes in oxygen-rich blood (red) from the lungs and pumps it out to the body. Red arrows show the path of the oxygen-rich blood through the left atrium, mitral valve, left ventricle and aortic valve to the aorta. The aorta delivers this oxygen-rich blood to the rest of your body. A. The Right Side of Your Heart B. The Left Side ...
