he vascular system is made up of the vessels that carry our blood. Arteries carry oxygen-rich blood away from the heart. Veins carry oxygen-poor blood back to your heart. There is one exception to that statement; when the blood starts its vascular system trip at the right side of the heart, it is the pulmonary artery that carries the oxygen-poor blood to the lungs where it exchanges carbon dioxide for oxygen. Then the pulmonary vein carries oxygen-rich blood back to the heart. The blood goes back to the left side of the heart and is pumped out to the rest of the body. The main artery leading from the heart to the rest of the body is called the aorta. As the blood travels, it enters smaller and smaller blood vessels, reaching every cell in the body, dropping off nutrients and picking up waste products and carbon dioxide. The blood then starts the trip back in the veins, entering larger and larger ones as it goes, passing through the liver on the way to drop off waste products. The blood eventually arrives back at the right side of the heart to start the trip all over again.
Oxygen passes from the blood into organs through the wall of capillaries.
Blood passes through the capillaries, which provide a passage way for the blood from the arteries to the veins. The tiny, thin walled capillaries also allow for the exchange of gases through the tissue. You can read more about capillaries at fi.edu
The alveoli and capillaries in the lungs pass oxygen to the blood. Both have very thin walls, which allow the oxygen to pass from the alveoli to the blood. The capillaries then connect to larger blood vessels, called veins, which bring the oxygenated blood from the lungs to the heart.
The tiniest tubes that carry blood are the capillaries. These connect arteries and veins.
Arteries are connected to veins through capillary beds in the body tissues.
It passes through the wall of the digestive system, then into the blood.
The blood passes through tiny capillaries that lie in close proximity to the alveoli in the lungs. This is where the gas exchange takes place.
Capillaries
There is an exchange with oxygen, nutrients, and carbon dioxide and water vapor.
Blood does not move faster through the capillaries. Blood flow is slowest in the capillaries.
the three main tubes that blood can pass through in the circulatory system are the arteries, veins, and capillaries.
blood, at first it is deoxygenated but by the time it leaves the lungs it is full of dissolved oxygen