Diseases, Conditions, Syndromes

US hitting encouraging milestones on virus deaths and shots

COVID-19 deaths in the U.S. have dipped below 300 a day for the first time since the early days of the disaster in March 2020, while the drive to put shots in arms approached another encouraging milestone Monday: 150 million ...

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 ...

Health

Stay healthy and cool during the heatwave

The triple-digit temperatures forecast for this week can expose people to dehydration, heat exhaustion and even heat stroke. UC Davis Health occupational and environmental medicine physician Sheri Belafsky and sports medicine ...

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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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