Scientists warn of pandemic endangering amphibians

A deadly disease affecting amphibians has descended into a global pandemic that has already wiped out 90 species, a prominent US biologist warned Thursday at the World Organisation for Animal Health Aquatic Conference in ...

Combating fatigue with a smartwatch application

Scientists from EPFL, UNIL and local startup be.care have developed a system that uses heart rate variability to detect fatigue and identify what kind it is. The system then uses the results to suggest lifestyle changes that ...

Fit to drive? The car will judge

When you're sleepy, stressed or have had a few drinks, you're not in the best position to drive – or even make that decision. But automated cars could soon make that call for you.

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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.

This text uses material from Wikipedia, licensed under CC BY-SA