Yes. The following website posted an article from the European Journal of Vascular and Endovascular Surgery that state there are Microscopic Venous Valves (MVVs) in many tissues of the body. http://cat.inist.fr/?aModele=afficheN&cpsidt=18141420
No; arteries (and arterioles) depend on smooth muscle contraction, whereas veins (and venules) have valves.
No the way the valves of the heart are set up causes the blood to move in one direction only.
Capillaries
veins have valves. y
yes it has 2 valves , one for fluid, one for waste production
No; arteries (and arterioles) depend on smooth muscle contraction, whereas veins (and venules) have valves.
Arterioles are smaller vessels that carry blood away from the heart, while venules are smaller vessels that carry blood back to the heart. By observing the direction of blood flow and the presence of valves (which venules have), one can distinguish between arterioles and venules in the frog's foot vasculature.
No, the valves that prevent backflow of blood are one-way valves.
yes.it prevent the intermixing of oxygenated and deoxygenated blood
Bicycle tube valves are one-way valves. They let air pass one way, then holds it in.
VALVES
Veins have one way valves because the pressure in veins is lower than that in arteries, and the valves prevent backflow that could be caused by gravity or muscle flexure.
Veins. Veins are blood vessels that carry blood from tissues and organs back to the heart; they have thin walls and one-way valves.
In the bodies blood system, they prevent back flow of the blood (one way valves) .
One-way valves prevent the back flow of bloodThere are tiny one way valves throughout a vein. These stop blood from flowing backwards. Interestingly, when these valves in veins in the legs malfunction, the result are varicose veins.
veins
The blood in venules of the systemic circulation is deoxygenated. The blood in pulmonary venules is oxygenated.