Systemic blood circulation
Is the circulation involving blood supply to the part of the body except lungs. This circulation starts from aorta which caries oxygenated blood from left ventricles. Aorta breaks up into smaller arteries and finally ends to capillaries, where exchange of materials such oxygen or other nutrients from capillaries to the tissue and waste product such as carbon dioxide from tissues to blood capillaries take place. The capillaries unite to form venules which join upto finally form large venous trunk namely superior venacava and inferior venacava. This two venous trunk open in the right atrium of heart. This course of circulation from left ventricle to the right atrium is called systemic circulation.