Heart | Structure, Function, Diagram, Anatomy, & Facts | Britannica
6 天之前 · 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 - 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 carbon dioxide to the lungs. [3]
Heart: Anatomy & Function - Cleveland Clinic
2024年1月26日 · 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 vital role, it’s important to take care of it. Conditions that affect your heart are very common, but you have the power to make changes for a stronger heart.
How the Heart Works - What the Heart Looks Like - NHLBI, NIH
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 valves, which make sure that the blood keeps flowing in the right direction.
Anatomy of the human heart - Wikipedia
It consists of four chambers, four valves, two main arteries (the coronary arteries), and the conduction system.
Heart Anatomy, Function, and Blood Circulation - WebMD
2024年8月22日 · On the inside, the heart is a four-chambered, hollow organ. It is divided into the left and right side by a wall called the septum.
Heart Anatomy: Diagram, Blood Flow and Functions - MedicineNet
Learn about the heart's anatomy, how it functions, blood flow through the heart and lungs, its location, artery appearance, and how it beats.
Anatomy of the Human Heart - SpringerLink
6 天之前 · The human heart assumes an oblique position in the thorax, with two-thirds to the left of the midline (Figs. 4.2 and 4.3). The heart is roughly in a plane that runs from the right shoulder to the left nipple. The base is located below the third rib as it approaches the sternum (it should be noted that the sternal angle occurs at the level of ...
The Heart: Anatomy and 3D Illustrations - Innerbody
6 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.
How the Heart Works - The Heart - NHLBI, NIH
2022年3月24日 · Your heart is at the center of your circulatory system. This system is a network of blood vessels, such as arteries, veins, and capillaries, that carries blood to and from all areas of your body. Your blood carries the oxygen and nutrients that your organs need to work properly.