News tagged with heart

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

Is there a link between telomere length and cancer?

Telomeres are regions of repetitive DNA at the end of human chromosomes, which protect the end of the chromosome from damage. Whilst shorter telomeres are hypothesized biological markers of older age and have been linked ...

Mar 23, 2017
popularity199 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

Subscribe to rss feed