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 double pump that is the center of the circulatory system in humans, other mammals, and birds. Learn more about the heart in this article.

2024年1月26日 · Your heart’s main function is to move blood throughout your body. Blood brings oxygen and nutrients to your cells. It also takes away carbon dioxide and other waste so other organs can dispose of them.

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. [2] The pumped blood carries oxygen and nutrients to the tissue, while carrying metabolic waste such as carbon dioxide to the lungs. [3]

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, maintaining blood pressure, supporting other organs, and pumping hormones and other vital substances to different parts of the body.

2022年3月24日 · This image shows the four chambers of the heart and the direction that blood flows through the heart. Oxygen-poor blood, shown in blue-purple, flows into the heart and is pumped out to the lungs. Then oxygen-rich blood, shown in red, is pumped out to the rest of the body, with the help of the heart valves.

2020年9月30日 · The human heart is a finely-tuned instrument that serves the whole body. It is a muscular organ around the size of a closed fist, and it sits in the chest, slightly to the left of...

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 and two ventricles.

2017年7月26日 · The heart is a muscular organ that pumps blood throughout the body. It is located in the middle cavity of the chest, between the lungs. In most people, the heart is located on the left side of the chest, beneath the breastbone. The heart is composed of smooth muscle.

It consists of four chambers, four valves, two main arteries (the coronary arteries), and the conduction system.

Following are the main functions of the heart: One of the primary functions of the human heart is to pump blood throughout the body. Blood delivers oxygen, hormones, glucose and other components to various parts of the body, including the human heart.