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Heart - Circulatory System • Capillaries do the work of...

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Unformatted text preview: Circulatory System • Capillaries do the work of the circulatory system • Capillaries are where all exchange takes place • Closed system - blood goes back to the heart with no blood lost Heart • 4 chambers • Atria ( also called auricles) • Ventricles • Right side has deoxygenated blood • Left side has oxygenated blood • Apex - inferior part of the heart Heart Atria • Filling chambers • Right atrium receives deoxygenated blood from the body • Left atrium receives oxygenated blood from the lungs Heart Ventricles • Pumping chambers • Right ventricle pumps deoxygenated blood to the lungs • Left ventricle pumps oxygenated blood to the body Heart Apex • Inferior part of the heart • Part of the left ventricle • Thickest wall - most muscle because it has to pump blood to the entire body Heart Right Side • Major vessels are inferior and superior vena cava • Inferior vena cava - brings deoxygenated blood from the lower extremities • Superior vena cava brings deoxygenated blood from the upper extremities, and head, neck, and brain •...
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Heart - Circulatory System • Capillaries do the work of...

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