Question

what are the main fine blood vessels types.

Explain any two of them.

Answer 1

these are small thin blood vessels that connects the arteries and the veins.

Answer 2

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$\underline \textbf{here \: is \: your \: answer}$

There are mainly five types of blood vessels that are

a) Arteries
b)Arterioles
c)Capillaries
d)venules and
e)vein

$\underline \textbf{arteries}$
Arteries carry blood away from the heart. They are stronger and thicker than veins.Artery is a thick wall in which blood flow under very high pressure.The lumen is small.All arteries carry oxygenated blood except pulmonary artery.


$\underline \textbf{arterioles}$
They are smaller than arteries that delivers the blood to the capillaries .They are also having smooth muscles on their walls.Contraction and relaxation of the muscles change the diameter of arteries which leads to decrease or increase the blood flow in them.


$\underline \textbf{capillaries}$
The are smallest microscopic vessels of blood.They have no muscular wall and they are made up of a single cell.They connect arterioles to venules in order to form veins.


$\underline \textbf{venules}$
They are small vessel formed by many capillaries or when capillaries come together.They carry blood from the capillaries to veins.


$\underline \textbf{veins}$
Veins have thin muscular walls means the middle layer is thin.Blood flow under low pressure so they have valves in order to present the backflow of the blood.The lumen of the veins is large.All the veins carry deoxygenated blood except pulmonary vein.



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$\huge \textbf{thank \: you}$