Freud died in 1939. Today he falls under criticism from most sides, as his speculative theories fail to find support. However, Freud's work presented a new way of thinking about human nature, and his legacy lives on in the vocabulary and beliefs of millions. Theory Sigmund Freud is the father of Psychoanalysis.
The aorta carries oxygenated blood to the body. The pulmonary artery carries deoxygenated blood to the lungs and it is the only artery to carry deoxygenated blood. There are two veins associated with the heart. The vena cava, or great vein, carries deoxygenated blood back to the heart from the body.
(very small veins) merge into VEINS which carry blood back to the heart. The vein walls are similar to arteries but thinner and less elastic. Veins carry deoxygenated blood towards the lungs where oxygen is received via the pulmonary capillaries. The PULMONARY Veins then carries this oxygenated blood back to the heart.