Veins.
No, there are no valves in the intermammary channels of the breast. The intermammary channels are primarily used for blood and lymphatic vessel passage between the breasts. Valves are typically found in veins to prevent backflow of blood.
passive
Valves are primarily found in veins. They are important because when blood is returning to the heart from places like the feet, they are moving against gravity. In order to prevent the blood from falling down to the feet as it rises back to the heart, valves are in place in order to prevent the blood from flowing backward.
Aids is present in the blood - the blood circulates through the blood vessels and therefore, yes, it is found in the main blood vessels (and all other blood vessels).
where are nerves and blood vessels are found
Arteries have smooth muscle in their walls. The smaller the artery is, the less muscle is found. Veins have none, they count on the skeltal muscles to move blood back to the heart. The veins also have valves which prevent back flow.
Blood vessels are found in the1) arteries2) veins3) capillaries
In the blood vessels and in the lymph vessels.
the middle layer, called the tunica media
In the blood
The part of a tooth where the nerve and blood vessels are found is called the pulp chamber.