Heart | Structure, Function, Diagram, Anatomy, & Facts | Britannica
heart, organ that serves as a pump to circulate the blood. It may be a straight tube, as in spiders and annelid worms, or a somewhat more elaborate structure with one or more receiving chambers (atria) and a main pumping chamber (ventricle), as in mollusks. In fishes the heart is a folded tube, with three or four enlarged areas that correspond to the chambers in the mammalian heart. In animals ...

Heart: Anatomy & Function - Cleveland Clinic
Your heart is a vital organ that keeps blood pumping through your body. Learn more about your heart.

Heart (band) - Wikipedia
Heart is an American rock band formed in 1974 in the Pacific Northwest. [1] The band evolved from previous projects led by the founding members Roger Fisher (guitar) and Steve Fossen (bass guitar), including the Army (1967–1969), Hocus Pocus (1969–1970), and White Heart (1970–1973). By 1975, the original members Fisher, Fossen, and Ann Wilson (lead vocals and flute) along with Nancy ...

Heart - Alone - YouTube
Heart - Alone Heart 1.18M subscribers 2M 519M views 16 years ago #Remastered #Heart #Alone

Heart Anatomy, Function, and Blood Circulation - WebMD
Learn about heart anatomy, including chambers, valves, and blood vessels, and how they coordinate blood circulation to keep the body functioning.

American Heart Association | To be a relentless force for a world of ...
Learn more about the American Heart Association's efforts to reduce death caused by heart disease and stroke. Also learn about cardiovascular conditions, ECC and CPR, donating, heart disease information for healthcare professionals, caregivers, and educators and healthy living.

How the Heart Works - What the Heart Looks Like | NHLBI, NIH
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. Read more about heart valves and how they help blood flow through the heart. Anatomy of the interior of the heart. This image shows the four chambers ...

The heart: Anatomy, how it works, and more - Medical News Today
Here, learn about the structure of the heart, what each part does, and how it works to support the body. We also explore the electrical impulses and the role of CPR.

Heart - Simple English Wikipedia, the free encyclopedia
The heart The heart is a hard-working, fist-sized muscle found in people and animals. It pumps out blood through tube-like structures called blood vessels. The heart and these vessels together make up the body-wide circulatory system. Blood carries in oxygen -rich air and nutrient-packed food to the body and takes away waste-filled substances like carbon dioxide to the lungs. In people, the ...