News tagged with heart

Related topics: heart attack · heart failure · heart disease · heart muscle · patients

Increased anxiety associated with sitting down

Low energy activities that involve sitting down are associated with an increased risk of anxiety, according to research published in the open access journal BMC Public Health. These activities, which include watching TV, ...

Jun 18, 2015
popularity199 comments 3

Molecular cause of heart condition identified

In 2012, researchers at the Stanford University School of Medicine showed that heart muscle cells made from the skin of people with a cardiac condition called dilated cardiomyopathy beat with less force than those made from ...

Jun 18, 2015
popularity7 comments 0

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

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