Cardiology

Researchers uncover the embryonic origin of the heart

Researchers from the Francis Crick Institute have studied the earliest point at which the heart forms during embryonic development and revealed, for the first time, that each part of the heart has a unique origin. Their study ...

Medical research

Switching off heart protein could protect against heart failure

Switching off a heart muscle protein could provide a new way for drugs to combat heart failure in people who've had a heart attack, according to research led by the University of Cambridge and published in the journal Nature.

Cardiology

Self-organizing human heart organoids

Biologist Sasha Mendjan at the Austrian Academy of Sciences in Vienna and his team have used human pluripotent stem cells to grow sesame-seed-sized heart models, called cardioids, that spontaneously self-organize to develop ...

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Heart

The heart is a muscular organ in all vertebrates responsible for pumping blood through the blood vessels by repeated, rhythmic contractions, or a similar structure in annelids, mollusks, and arthropods. The term cardiac (as in cardiology) means "related to the heart" and comes from the Greek καρδιά, kardia, for "heart."

The heart of a vertebrate is composed of cardiac muscle, an involuntary striated muscle tissue which is found only within this organ. The average human heart, beating at 72 beats per minute, will beat approximately 2.5 billion times during a lifetime (about 66 years). It weighs on average 250 g to 300 g in females and 300 g to 350 g in males.

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