Heart: How the Heart Works Index

Featured: How the Heart Works Main Article

The heart is a very important organ in the body. It is responsible for continuously pumping oxygen and nutrient-rich blood throughout your body to sustain life. It is a fist-sized muscle that beats (expands and contracts) 100,000 times per day, pumping a total of five or six quarts of blood each minute, or about 2,000 gallons per day.

Medications

    Related Diseases & Conditions

    • High Blood Pressure High blood pressure is defined as a pressure of 140/90 mmHg or higher in the arteries. Genetic factors, high salt intake, and...learn more »
    • Heart Attack Heart attack happens when a blood clot completely obstructs a coronary artery supplying blood to the heart muscle. A heart attack...learn more »
      In This Article
      Heart Attack Article
      • Heart attack facts
      • What is a heart attack?
      • What causes a heart attack?
      • What are the symptoms of a heart attack?
      • What are the complications of a heart attack?
      • What are the risk factors for atherosclerosis and heart attack?
      • How is a heart attack diagnosed?
      • What is the treatment for heart attack?
      • What are the risk factors for heart attack in women?
      • What are the symptoms of heart attack in women and how is heart attack diagnosed?
      • How is heart attack in women treated?
      • What about hormone therapy and heart attack in women?
      • What is new in heart attack?
    • Mitral Valve Prolapse (MVP) Mitral valve prolapse (MVP) is also also known as "click murmur syndrome" and "Barlow's syndrome." Mitral valve prolapse is the...learn more »
      In This Article
      Mitral Valve Prolapse (MVP) Article
      • Mitral valve prolapse facts
      • What is mitral valve prolapse?
      • What are the sign and symptoms of mitral valve prolapse?
      • How is mitral valve prolapse diagnosed and evaluated?
      • What is the treatment for mitral valve prolapse?
    • Congestive Heart Failure (CHF) Congestive heart failure (CHF) refers to a condition in which the heart loses the ability to function properly. Heart disease,...learn more »
    • Premature Ventricular Contractions (PVCs) Premature ventricular contractions (PVCs) are premature heartbeats originating from the ventricles of the heart. PVCs are...learn more »
    • Low Blood Pressure (Hypotension) Low blood pressure, also referred to as hypotension, is blood pressure that is so low that it causes symptoms or signs due to the...learn more »

Related FAQs, Doctor's & Expert's Views

Procedures & Tests

Health News

Tools & References