News tagged with heart

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

An autoimmune response may contribute to hypertension

High blood pressure is a major risk factor for heart attack, stroke, chronic heart failure, and kidney disease. Inflammation is thought to promote the development of high blood pressure, though it is not clear what triggers ...

Sep 17, 2014
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Pre-diabetes, diabetes rates fuel national health crisis

Americans are getting fatter, and older. These converging trends are putting the USA on the path to an alarming health crisis: Nearly half of adults have either pre-diabetes or diabetes, raising their risk of heart attacks, ...

Sep 16, 2014
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Inflammation may be key to diabetes, heart disease link

Inflammation may be the reason high blood sugar levels damage blood vessels, raising the possibility that anti-inflammatory medications might someday be used to lower the risk of blood vessel disease in people with diabetes, ...

Sep 11, 2014
popularity 4.3 / 5 (11) | comments 1

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