Heart - Wikipedia
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]
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.
Anatomy of the human heart - Wikipedia
The heart is a muscular organ situated in the mediastinum. It consists of four chambers, four valves, two main arteries (the coronary arteries), and the conduction system.
Heart: Anatomy & Function - Cleveland Clinic
2024年1月26日 · What is the heart? The heart is a fist-sized organ that pumps blood throughout your body. It’s your circulatory system ’s main organ. Muscle and tissue make up this powerhouse organ. Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission.
How the Heart Works - What the Heart Looks Like - NHLBI, NIH
2022年3月24日 · Anatomy of the interior of the heart. 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.
Heart Information, Facts, Photos | National Geographic
About the size of its owner's clenched fist, the organ sits in the middle of the chest, behind the breastbone and between the lungs, in a moistened chamber that is protected all round by the rib...
Anatomy of a Human Heart - Michigan Medicine
2019年2月27日 · Located between the lungs in the middle of the chest, the heart pumps blood through the network of arteries and veins known as the cardiovascular system. It pushes blood to the body's organs, tissues and cells. Blood delivers oxygen and nutrients to every cell and removes the carbon dioxide and other waste products made by those cells.
The Heart: Anatomy and 3D Illustrations - Innerbody
3 天之前 · Explore the anatomy and core functions of the heart with Innerbody's interactive 3D model. The heart is a muscular organ about the size of a closed fist that functions as the body's circulatory pump.
What is the real cardiac anatomy? - PMC - PubMed Central (PMC)
The heart occupies the middle part of the mediastinum, but its long axis is markedly skewed relative to the long axis of body. Virtual dissection is able to show the heart in the so‐called anatomical position. White arrows indicate the acute margin.
The human heart • Heart Research Institute
The heart is one of the most important organs in the human body. It is a powerful fist-sized muscle that pumps blood around the body through a network of blood vessels – together, the heart and blood vessels make up the body’s cardiovascular system.