Traveling around our body, our blood goes through the human body's tiniest blood vessels called capillaries, which connects the (6)_________and give each cell nutrients and (8)_________ and the (7)._________The capillaries are connected to every cell in our body while taking away carbon dioxide. This dark blue deoxygenated blood then travels back to the heart, and enters in the right side of it through the veins called superior vena cava and inferior vena cava, and goes directly to the (9)_________ After there, the blood goes through a valve into the (10)_________back to the lungs. This blood leaves the heart through the (11)_________The heart beats then, pumping the blood to go to the lungs. In the lungs, blood drops off carbon dioxide and picks up oxygen. From the lungs, the blood travels again to the heart, entering through the left side of it through the (12)_________The oxygenated blood enters the (13)_________Then the blood is pushed into the (14)_________ The heart beats again and the blood leaves the heart through the (15)_________ dioxide. From here, the blood travels​