How The Heart Works- 3D Animation

How The Heart Works- 3D Animation


We’ll start with the basics and examine how
the human heart works. The heart is a muscle about the size of a
clenched fist that is located under the rib cage and between the lungs. It is divided into a left side and a right
side. Each side has two chambers. The upper chambers are called atria and the
lower chambers are called ventricles. Blood flows from the atria to the ventricles
through one way valves. The atria and the ventricles work together
as a team to pump blood through the heart. The right atrium receives oxygen depleted
blood from the body and pushes it into the right ventricle, which pumps it out to the
lungs. Oxygen enriched blood is returned from the
lungs to the left atrium which pushes it into the left ventricle, where it is pumped back
out to the body. After the body has used all the oxygen in
the blood, the blood returns to the heart and the cycle repeats. In a normal heart this sequence occurs sixty
to one hundred times per minute. The heart’s beating rhythms are driven by
electrical impulses within the heart. In a normal heart rhythm, electrical signals
originate in the heart’s natural pacemaker, the sinoatrial node, also called SA node. These electrical signals travel from the atria
to the ventricles in a defined rhythmic pattern. The electrical signals pass through the atrioventricular,
or AV node. The AV node acts as a natural gatekeeper for
the heart, through which all the heart’s electrical signals normally pass. The electrical signals then pass through the
bundle of His to the Purkinje fibers which cause the heart muscles to contract. There are many factors that contribute to
proper heart function. Talk to your physician about your heart health and steps you can
take to keep your heart healthy and strong.

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