what is systematic circulation? Describe its importance. Why are the walls of the ventricle more muscular than the walls of atria ?
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The systemic circulation provides the functional blood supply to all body tissue. It carries oxygen and nutrients to the cells and picks up carbon dioxide and waste products. Systemic circulation carries oxygenated blood from the left ventricle, through the arteries, to the capillaries in the tissues of the body.
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The heart is at the centre of the circulatory system, pumping blood to deliver oxygen and nutrients to all areas of the body, and removing waste products.
The heart works automatically, without us having to consciously control it.
The heart is a unique type of muscle, perfect for its role: it never tires and never needs to rest.
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