怎么讲心脏的专业知识英语
Heart, in medical terminology, refers to the muscular organ that pumps blood through the circulatory system. It is divided into four chambers: the right atrium, right ventricle, left atrium, and left ventricle. The heart's main function is to circulate oxygen-rich blood to the body's tissues and oxygen-poor blood to the lungs for reoxygenation. The process begins when the heart contracts, pushing blood out of the left ventricle into the aorta, the body's main artery. The right ventricle sends blood to the lungs through the pulmonary artery. The heart's rhythm is controlled by electrical impulses generated in the sinoatrial node, ensuring regular and coordinated contractions. Understanding the heart's structure and function is crucial for diagnosing and treating various cardiac conditions.
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