Question

Why do veins have thinner walls? (Class 7)

Please Solve the answer correctly​

Answer 1

Answer:

hey

Your solution

=> Blood vessels are a system of tubular structures that carry blood.

There are three types:>

▪️ Arteries

▫️ Capillaries

◽ Veins

Now, about vein

A section of the artery and vein shows that Arteries have a thick wall and narrow lumens

=

$\the \: thick \: wall \: help \: sustain \\ the \: high \: pressure \: of \: the \: blood \: \\ flowing \: in \: them$

$\veins \: have \: a \thin \: wall \\ and \: a \wider \: lumen \\ the \: valves \: present \: in \: the \: veins \\ prevent \: the \: backward \: flow \: of \: \\ blood \: towards \: gravity \: \\ the \: blood \: in \: vein \: flow \: against \\ gravity$

• They carry blood from different parts of body to the heart.

•They carry deoxygenated blood (except the pulmonary vein).

•In vein, blood flow with low speed under low pressure.

•The veins are comparatively superficial.

• Valves are present in veins.