You panic. You feel hurt and stupid at the same time. About 2 days later you feel a lot better and actually free from the burden of carrying around all that weight. You think, 'at least I know now how they feel'. Then you pick yourself up, dust yourself off and move on. Love is sweet.
The cardiovascular system contains your arteries. This system is responsible for pumping blood throughout the body and contains the heart, veins, capillaries, and other parts â¦that pump blood to the rest of the body. Blood passes through arteries, therefore making the arteries part of the cardiovascular system.
Veins. 1  Carry blood to the heart (always de-oxygenated apart from the pulmonary vein which goes from the lungs to the heart). 2  Have thin walls. 3  Have larger internal lumen lumen: The central cavity of a hollow structure in an organism or cell. 4  Contain blood under low pressure. 5  Have valves to prevent blood flowing backwards.