Research symptoms & diagnosis of Metastatic cancer: 1  Overview -- Metastatic cancer. 2  Diagnostic Tests for Metastatic cancer. 3  Home Diagnostic Testing. 4  Complications -- Metastatic cancer. 5  Doctors & Specialists. 6  Misdiagnosis and Alternative Diagnoses. 7  Hidden Causes of Metastatic cancer.
Systemic circulation carries oxygenated blood from the left ventricle, through the arteries, to the capillaries in the tissues of the body. From the tissue capillaries, the deoxygenated blood returns through a system of veins to the right atrium of the heart.ystemic circulation carries oxygenated blood from the left ventricle, through the arteries, to the capillaries in the tissues of the body. From the tissue capillaries, the deoxygenated blood returns through a system of veins to the right atrium of the heart.
So as you go down along the artery it gets smaller and carries less and less blood as it branches. The major veins in the body carry de-oxygenated blood back from the circulation towards the right side of the heart. The pulmonary veins are the exception as they carry oxygenated blood from the lungs to the left heart. They join together to form larger and larger veins as they gather from the periphery toward the larger veins.