The arteries are connected to the veins through capillaries. Blood leaves the heart through arteries, goes throughout the body, then by way of capillaries to the veins and returns to the heart.
Capillaries.
capiilaries
Veins and arteries
veins and arteries
Capillaries. From the arteries, arterioles carry the blood, and at their ends they have a minute sphincter beyond which they are venules. The tiny sphincters may play a part in stopping bleeding.
Blood vessels carry the blood to every part of the body.
collateral veins are produced by your body when it thinks it is not getting sufficient circulation from a part of the body. If a part of your body is not returning blood back to the heart from a particular part of the body, your body will grow veins around that area to assisst in circulating the blood. Unfortunately these veins are usually thinner and less organized than the original venous structures. Spider veins are examples of collateral veins. There are collateral arteries as well. When a part of the body is not receiving enough oxygen new arteries will grow around to assisst in circulation. Like veins these are of poor structural quality too.
Veins and Arteries move the blood throughout your body which are part of the Respiratory System with the help of the heart pumping the blood.
The blood traveling in the veins and arteries, driven by the pumping of the heart.
As far as I am concerned, veins do not have valves..The only part of the human anatomy which have valves are where the ear canal and nasal cavity connect, and in the entrances/exits of the heart where the arteries connect.
You have the aorta, large and small arteries, capillaries and veins in the systemic circulation. You have the pulmonary aorta, arteries, capillaries and veins in the venous system. The blood pressure in the systemic circulation is much greater and hence the vessels are thicker there.
Yes, since the brain and spine are part of the nervous system, then the nervous sytem has arteries and veins. There are major arteries in the brain.
Capillaries, they are the smallest of a body's blood vessels and part of the microcirculation. Capillaries are 5-10 μm in diameter and connect arterioles and venules and enable the exchange of water, oxygen, carbon dioxide, nutrients and waste chemical substances between blood and surrounding tissues.
Arteries are the blood vessels that carry blood away from the heart to all parts of the body. Veins are the blood vessels that carry deoxygenated blood from all body part to the heart and lungs.