Heart

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Brain

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Digestive system

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Nervous system

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Disease

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Main topic

Functions

Blood

De-Oxygenated Blood

Oxygenated Blood

Hormone regulation

Waste removal

Oxygen Transportation

Blood Circulation

Blood pressure

Nutrients

Anatomy

Heart rate

Pulmonary loop

Cardiac muscle

Pacemaker cells

Arteries

Coronary arteries

Veins

Vavles

Ventricles

Atrium