Question

state the functiona of the three types of blood vessel​

Answer 1

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$\bf{Arteries}$
Arteries carry oxygenated blood away from the heart to the tissues, except for pulmonary arteries, which carry blood to the lungs for oxygenation (usually veins carry deoxygenated blood to the heart but the pulmonary veins carry oxygenated blood as well).

$\bf{Veins}$
They are responsible for returning deoxygenated blood back to the heart after arteries carry blood out. The vena cava is the largest vein in the body. 

$\bf{Capillaries}$

They bring nutrients and oxygen to tissues and remove waste products.

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Answer 2

Arteries: Its function is to carry blood from the heart. They are very flexible and strong. They eventually branch into smaller branches called arterioles.

Capillaries: It allows the switching of chemicals and water between the tissues and blood. They are very thin and tiny. Exchange of blood takes place between blood tissues and capillaries. This function takes place in capillary beds. Connective tissues are also found occasionally.

Veins: It carries blood from the capillaries back towards the heart. They have much slighter walls compared to arteries.

Hope it helped you!!