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Learn about the heart, a muscular organ that pumps blood through the circulatory system in most animals. Find out how the heart is structured, how it works, what can go wrong and how to keep it healthy.
Learn about the different types of heart disease, such as coronary artery disease, arrhythmias, congenital heart defects and more. Find out the common signs, risk factors and treatments for each condition.
Learn about the heart, the main organ of your cardiovascular system. Find out how it works, what parts it has, and what conditions can affect it.
heart, organ that serves as a pump to circulate the blood.It may be a straight tube, as in spiders and annelid worms, or a somewhat more elaborate structure with one or more receiving chambers (atria) and a main pumping chamber (ventricle), as in mollusks. In fishes the heart is a folded tube, with three or four enlarged areas that correspond to the chambers in the mammalian heart.
Learn how your heart is structured and how it pumps blood through your body. Find out about heart valves, chambers, tissue, and conditions that affect the heart.
The heart's conduction system is an internal electrical network that ensures a steady heartbeat by coordinating the contraction and relaxation of heart muscles. It generates and transmits electrical impulses along precise pathways and synchronizes the movements of the heart's chambers.
Learn about the structure, function, and circulation of the human heart, a muscular organ that pumps blood throughout the body. Find out how the heart valves, electrical system, and blood vessels work together to deliver oxygen and nutrients and remove waste.
Learn about the structure and function of the heart, a muscular organ that pumps blood throughout the body. Find out the location, chambers, valves, layers, and blood flow of the heart with diagrams and medical review.
Learn about the heart anatomy, blood flow, and functions with this comprehensive article. Find out how the heart pumps blood, regulates electrical signals, and prevents backflow with valves.
Arrhythmias: Abnormal heart rhythms, like fast, slow, or irregular beats, can disrupt heart function. The most common type is atrial fibrillation, which causes a fast and irregular heartbeat. Heart valve diseases: Problems with heart valves can cause inefficient blood flow, leading to symptoms like fatigue, shortness of breath, and dizziness.