Heart | Structure, Function, Diagram, Anatomy, & Facts | Britannica
2024年12月9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.
Heart Information, Facts, Photos | National Geographic
Since the heart lies at the center of the blood delivery system, it is also central to life. Blood both supplies oxygen from the lungs to the other organs and tissues and removes carbon dioxide...
Heart - Wikipedia
The heart is a muscular organ found in most 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 …
Human heart: Anatomy, function & facts - Live Science
2022年7月27日 · The human heart is an organ that pumps blood throughout the body via the circulatory system.
Science of the Heart | HeartMath Institute
2023年2月25日 · Exploring intriguing aspects of the Science of the Heart, new research shows the human heart is much more than an efficient pump that sustains life. Our research suggests the heart also is an access point to a source of wisdom and intelligence that we can call upon to live our lives with more balance, greater creativity and enhanced intuitive ...
Cells of the adult human heart - Nature
2020年9月24日 · Our results highlight the cellular heterogeneity of cardiomyocytes, pericytes and fibroblasts, and reveal distinct atrial and ventricular subsets of cells with diverse developmental origins and...
Science of the Heart - HeartMath Institute
For centuries, the heart has been considered the source of emotion, courage and wisdom. At the HeartMath Institute Research Center, we are exploring the physiological mechanisms by which the heart communicates with the brain, thereby influencing information processing, perceptions, emotions and health.
Recreating the heart’s helical structure-function ... - Science
2022年7月7日 · The heart’s musculature is organized in a helical fashion, with cardiomyocytes in the left ventricle smoothly transitioning transmurally from a left- to right-handed helix . This helical alignment results in a “wringing motion” that was first described in 1669 by Lower .
Anatomy of the heart - ScienceDirect
2018年8月1日 · This article presents the heart as understood by anatomists, and uses the time-honoured nomenclature, particularly for the aortic and pulmonary valves and origins of the coronary arteries. The references are from an excellent compilation on …
The heart - The circulatory system (CCEA) - GCSE Combined Science …
Blood is pumped away from the heart at high pressure in arteries, and returns to the heart at low pressure in veins. The human circulatory system is a double circulatory system. The heart is...