Question

Artery and veins ten points

Answer 1

Arteries

Veins

1.Blood CirculationArteries carry blood away from the heart to the tissues of the body.Veins carry blood from the tissues of the body back to the heart.2.Blood TypeArteries carry oxygenated blood expect pulmonary artery.Veins carry deoxygenated blood except pulmonary vein.3.ThicknessArteries have thick elastic muscular walls.Veins have thin non elastic less muscular walls.4.PositionArteries are usually positioned deeper within the body.Veins are usually positioned closer beneath the surface of the skin.5.ValvesValves are absent.Valves are present.6.LumenThese possess narrow lumen.These possess wide lumen7.PressureBlood flows under high pressure.Blood flows under low pressure.8.ColorThese are reddish in color.These are bluish in color.9.TypesPulmonary and systemic arteries.Superficial veins, deep veins, pulmonary veins and systemic veins.

Answer 2

• Arteries carry blood away from the heart.
• They have thick walls composed of elastic muscular fibers which help maintain blood pressure away from the heart.  
• Veins take blood from the capillaries to the heart, Walls are thinner than arterial walls.
• Veins have valves that allow blood to flow only toward the heart when they are open, and when closed, they prevent backward flow of the blood.  
• Artery- highest blood pressure because of small cross sectional area and proximity to the heart. The elastic tissue and smooth muscle maintain pressure  
• Vein- furthest away from the heart, therefore lowest pressure of all blood vessels
• (Most) arteries carry oxygenated blood.
• (Most) veins carry deoxygenated blood