Heart Information

InternetFullOfHeartInformationThe Internet is chock-full of information about the human heart. It offers an ever-growing body of content that explores heart health, disease, structure, rhythm, and other topics. It is important to be cautious and not believe everything presented online: some sites contain reliable information and some do not.  Continue reading

Heart Size

FistAndHeartRecently, I read that the human heart is about the size of a fist. I made a fist, looked at it, and pondered. My fist is smaller than my brother’s, but it’s larger than my friend Julia’s.

My brother is larger than me and Julia is smaller—very petite. Those differences made me curious. I wondered about the size of the human heart, and factors that affect it.  Continue reading

Heart Parts

It is good to understand what the human heart looks like and how it functions. That makes it easier to take care of it and realize when it needs attention.

OutsideOfHeartDrawingThis essential muscle performs a life-sustaining job—endlessly pumping blood throughout the body.

Every part of the body uses and releases substances the blood carries:

  • Gasses, such as oxygen and carbon dioxide
  • Minerals, such as sodium and potassium
  • Fats, such as cholesterol and triglycerides
  • Sugar, which is glucose

and other substances. Some things blood-transports are nutrients and some are waste products. Nutrients include glucose and waste products include carbon dioxide.  Continue reading