Immunology

Research identifies obesity and infection link

The list of diseases and conditions complicated by obesity is a long one; it includes heart disease, cancer, diabetes and impaired wound healing, as well as skin infections. It is not always clear, however, in what way this ...

Genetics

Epigenomic map reveals circuitry of 30,000 human disease regions

Twenty years ago this month, the first draft of the human genome was publicly released. One of the major surprises that came from that project was the revelation that only 1.5 percent of the human genome consists of protein-coding ...

Cardiology

Bio-inspired hydrogel protects the heart from post-op adhesions

A hydrogel that forms a barrier to keep heart tissue from adhering to surrounding tissue after surgery was developed and successfully tested in rodents by a team of University of California San Diego researchers. The team ...

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.

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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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