Low oxygen blood flows out of the heart through the pulmonary semilunar valve and into the pulmonary trunk. From there is goes through the left and right pulmonary arteries into each respective lung.
The heart pumps de-oxygenated blood to the lungs by pulmonary artery
The oxygen is passing from through the walls of the capillaries and the organs' walls. There are specially designed proteins which are allowed from the cell, to pass through the cell's wall (membrane).
veins
yes
Yes, the heart and lungs are connected through the circulatory system. The heart pumps oxygen-poor blood to the lungs to pick up oxygen and then pumps oxygen-rich blood back to the rest of the body.
The right side of the heart: including the right atrium which tops off the right ventricle when it contracts and the right ventricle which pumps blood low in oxygen to the lungs. Pulmonary arteries carry that blood to the lungs. Pulmonary veins bring blood high in oxygen back to the heart.
maybe your question goes this way..."how does oxygen enter the blood from the lungs?"Two types of blood vessels carry blood throughout our bodies: The arteries carry oxygenated blood (blood that has received oxygen from the lungs) from the heart to the rest of the body. The blood then travels through the veins back to the heart and lungs, where it receives more oxygen.
The Pulmonary artery carries blood from the heart to the lungs and the pulmonary vein carries blood from the lungs to the heart. Also this means the Pulmonary Artery is the only artery in the body which carries deoxygenated blood, and the Pulmonary Vein is the only vein in the body which carries oxygenated blood.
Blood travels to the lungs because it is not oxygenated and it will become oxygenated in the lungs, since that is what the lungs are for. The pulmonary artery takes blood to the lungs, and the pulmonary vein takes blood from the lungs back to the heart, from whence it is pumped throughout the body.
the blood passes through your heart
All the blood flowing through the intestines passes through the liver on its way back to the heart.
Arteries carry blood away from the heart and Veins carry blood back to the heart. When the heart contracts it pushes the blood out through one way valves. There are also little one way valves in the veins and arteries so that the blood will continue to flow in one direction.