2025年1月27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.

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]

2023年8月22日 · Here are a few more heart-related facts, courtesy of cardiologist Brian Griffin, MD. Your heart beats about 100,000 times per day. During the average person’s lifetime, their heart beats more than 2.6 billion times. (Your pulse is a way you can feel your heart beating.)

2024年1月26日 · Electrical impulses make your heart beat, moving blood through these chambers. Your brain and nervous system direct your heart’s function. What is the function of the heart? Your heart’s main function is to move blood throughout your body. Blood brings oxygen and nutrients to your cells.

2022年3月24日 · Learn more about how the NHLBI supports heart health and heart disease research through the Framingham Heart Study, the Strong Heart Study, and the Jackson Heart Study. Last updated on March 24, 2022. Learn about your heart’s anatomy.

The human heart is about the size of a human fist and is divided into four chambers, namely two ventricles and two atria. The ventricles are the chambers that pump blood and the atrium are the chambers that receive blood.

2022年7月27日 · The human heart is an organ that pumps blood throughout the body via the vessels of the circulatory system, supplying oxygen and nutrients to the tissues and removing carbon dioxide and other...

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...

2024年12月26日 · In human anatomy, the heart is roughly the size of a closed fist and lies between the lungs in the chest’s central area. This area is known as the mediastinum. It has four chambers: two upper atria (right and left) and two lower ventricles (right and left).

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