The heart is a muscular organ found in humans and other animals. This organ pumps blood through the blood vessels. [1] Heart and blood vessels together make the circulatory system. …

2025年3月18日 · Heart, organ that serves as a pump to circulate the blood. It may be as simple as a straight tube, as in spiders and annelid worms, or as complex as the four-chambered …

As the main organ of your circulatory system, your heart keeps you alive. It pumps blood throughout your body, bringing oxygen to your cells and tissues. Since your heart plays such a …

1 天前 · Learn more about the American Heart Association's efforts to reduce death caused by heart disease and stroke. Also learn about cardiovascular conditions, ECC and CPR, …

2025年1月8日 · The seven main functions of the heart include pumping blood throughout the body, delivering oxygen to tissues, removing waste from tissues, controlling heart rate, …

2022年3月24日 · Your heart is in the center of your chest, near your lungs. It has four hollow chambers surrounded by muscle and other heart tissue. The chambers are separated by heart …

2025年1月22日 · The heart is a muscular organ that pumps blood throughout the body via the circulatory system. It is approximately the size of a fist and consists of four chambers: two atria …

2024年12月26日 · Explore the heart anatomy with its parts, names & a clear diagram. Learn how the heart functions & its crucial role in the circulatory system

2024年10月4日 · Blood is carried through the body in blood vessels called arteries and veins. The process of moving blood through the body is called circulation. Together, the heart and …

2024年8月1日 · The structure of the heart helps supply blood and oxygen to all parts of the body. It is divided by a partition (or septum) into two halves. The halves are, in turn, divided into four …