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- The Heart And How It Works

Assignment # C13

Bree Malone

on 29 November 2012

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Transcript of - The Heart And How It Works

The Heart The average adult heart beats 70 to 80 times per minute during rest of periods of inactivity. When a person becomes exercises or becomes excited the heart speeds upo in response to the bodys need for more oxygen the pace maker helps regulate the rate at which the heart beats , or contracts. The brain can change the rate of the heart beat by making the pacemaker increase or decrease the number of beats per minute. The Human Heart Labeled Structure Of The Heart Heart Beat Realisation the heart has a left and right side separated by a thick wall. Each side has two chambers a atrium and ventricle. The heart is a muscular organ that pumps blood through out your body. The heart is located near the middle of your chest. The average adults heart pumps approximately 5 quarts of blood through out the vessels. Atrium; receives blood entering the
heart. Ventricle; the chamber that pumps
blood from the heart to the rest
of the body. The flap like valves keep blood from moving back into the atria when the ventricles contract. The closing of the valves is responsible for the sound of your heart beat. The heart is a double pump the right side pumos blood to the lungs and the left side pumps blood to the rest of the body. The systematic circulation is the route that blood travels from the heart to most of the body and back to the heart. The Human Heart
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