Watch in 3D What is Heart Attack, Function of Heart, What Can Cause a Heart To Stop Beating

Heartbeat is a contraction and relaxation of the heart muscles.

Heart receives oxygenated blood from lungs.

Oxygenated blood is pumped to the rest of the body by heart.

Intensity of contraction depends on nutrition and oxygen supply to heart.

A heart muscle receives blood through coronary arteries.

Narrowing or blockade of coronary artery causes decreased blood supply to heart.

Decreased blood supply results in reduced oxygen and nourishment to heart muscles.

One of the causes of decreased blood supply is narrowing or blockade by cholesterol plaques.

Plaque builds up in the artery walls.

Enlarged plaque can block artery or piece of a plaque may dislodge and pushed in to smaller arteries resulting in complete blockade of smaller artery.

Lack of blood to heart muscles result in lack of adequate oxygen and nourishment.

Heart contraction becomes weak.

Eventually heart stops or fibrillates resulting in heart attack.

Team PainAssist
Team PainAssist
Written, Edited or Reviewed By: Team PainAssist, Pain Assist Inc. This article does not provide medical advice. See disclaimer
Last Modified On:September 11, 2019

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